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Class 11 Science Chapter Practice

Mathematics Relations And Functions MCQ Questions for Class 11 Science

Related questions grouped automatically for chapter-wise practice. Topics include Algebra of real functions, Cartesian product of sets, Functions as a special kind of relation, Graphs of standard functions, Real valued functions, domain and range of these functions.

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Chapter Revision Guide

Class 11 Science Mathematics Relations And Functions Practice

Related questions grouped automatically for chapter-wise practice.

Relations And Functions - Topics Covered

Mathematics Relations And Functions ke topic-wise MCQs yahan grouped context me milenge. jo aap ko Exam ki preparation me madad milegi. Ye questions exam-oriented hai and students ko concept clarity, quick revision aur board exam preparation kaafi madad karenge. Sabhi se jude MCQs important topics ke anusar arranged hai, taaki aap Relations And Functions ko easy tarike se practice aur revise kar sake.

  1. Algebra of real functions
    600 MCQs
  2. Cartesian product of sets
    600 MCQs
  3. Functions as a special kind of relation
    600 MCQs
  4. Graphs of standard functions
    600 MCQs
  5. Real valued functions, domain and range of these functions
    600 MCQs
  6. Relations
    600 MCQs

Start Relations And Functions Quiz

Difficulty select karke Mathematics / Relations And Functions chapter-filtered timed practice karein. Har button me live question count show hoga.

Mathematics Relations And Functions MCQ Questions

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यदि (A) और (B) दो समुच्चय हैं, तो \(A\times B\) का सही अर्थ क्या है?

If (A) and (B) are two sets, what is the correct meaning of \(A\times B\)?

Explanation opens after your attempt
Correct Answer

A. (A) और (B) के सभी क्रमित युग्मAll ordered pairs of (A) and (B)

Step 1

Concept

In \(A\times B\), the first component comes from (A) and the second from (B). In exams, always check the order of the pair.

Step 2

Why this answer is correct

The correct answer is A. (A) और (B) के सभी क्रमित युग्म / All ordered pairs of (A) and (B). In \(A\times B\), the first component comes from (A) and the second from (B). In exams, always check the order of the pair.

Step 3

Exam Tip

\(A\times B\) में पहला घटक (A) से और दूसरा घटक (B) से आता है। परीक्षा में क्रमित युग्म का क्रम जरूर देखें।

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यदि \(A=\{1,2\}\) और \(B=\{3\}\) है, तो \(A\times B\) क्या होगा?

If \(A=\{1,2\}\) and \(B=\{3\}\), what is \(A\times B\)?

Explanation opens after your attempt
Correct Answer

A. ({(1,3),(2,3)})

Step 1

Concept

Each element of (A) is paired with (3) from (B). While listing, keep the first position for (A).

Step 2

Why this answer is correct

The correct answer is A. ({(1,3),(2,3)}). Each element of (A) is paired with (3) from (B). While listing, keep the first position for (A).

Step 3

Exam Tip

हर तत्व (A) से लेकर (B) के (3) के साथ युग्म बनाया जाता है। सूची बनाते समय पहला स्थान (A) का रखें।

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यदि \(A=\{5\}\) और \(B=\{7,8\}\) है, तो \(A\times B\) में कितने क्रमित युग्म होंगे?

If \(A=\{5\}\) and \(B=\{7,8\}\), how many ordered pairs are in \(A\times B\)?

Explanation opens after your attempt
Correct Answer

B. (2) युग्म(2) pairs

Step 1

Concept

(n\(A\times B\)=n(A)n(B)), so \(1\times 2=2\). In exams, count elements first and then multiply.

Step 2

Why this answer is correct

The correct answer is B. (2) युग्म / (2) pairs. (n\(A\times B\)=n(A)n(B)), so \(1\times 2=2\). In exams, count elements first and then multiply.

Step 3

Exam Tip

(n\(A\times B\)=n(A)n(B)), इसलिए \(1\times 2=2\)। परीक्षा में पहले संख्या गिनें फिर गुणा करें।

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यदि (n(A)=4) और (n(B)=5) है, तो (n\(A\times B\)) कितना होगा?

If (n(A)=4) and (n(B)=5), what is (n\(A\times B\))?

Explanation opens after your attempt
Correct Answer

B. (20)

Step 1

Concept

The number of elements in a Cartesian product is (n(A)n(B)). Here \(4\times 5=20\), so this is the correct answer.

Step 2

Why this answer is correct

The correct answer is B. (20). The number of elements in a Cartesian product is (n(A)n(B)). Here \(4\times 5=20\), so this is the correct answer.

Step 3

Exam Tip

कार्तीय गुणन में तत्वों की संख्या (n(A)n(B)) होती है। यहां \(4\times 5=20\), यही सही उत्तर है।

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यदि \(A=\varnothing\) और \(B=\{1,2\}\) है, तो \(A\times B\) क्या होगा?

If \(A=\varnothing\) and \(B=\{1,2\}\), what is \(A\times B\)?

Explanation opens after your attempt
Correct Answer

A. \(\varnothing\)

Step 1

Concept

There is no element in (A) for the first component, so no ordered pair is formed. Pay special attention to the empty set.

Step 2

Why this answer is correct

The correct answer is A. \(\varnothing\). There is no element in (A) for the first component, so no ordered pair is formed. Pay special attention to the empty set.

Step 3

Exam Tip

पहले घटक के लिए (A) में कोई तत्व नहीं है, इसलिए कोई क्रमित युग्म नहीं बनेगा। खाली समुच्चय पर विशेष ध्यान दें।

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यदि \(A=\{1,2\}\) और \(B=\{3,4\}\) है, तो क्या \((2,3)\in A\times B\) है?

If \(A=\{1,2\}\) and \(B=\{3,4\}\), is \((2,3)\in A\times B\)?

Explanation opens after your attempt
Correct Answer

A. हां, क्योंकि \(2\in A\) और \(3\in B\)Yes, because \(2\in A\) and \(3\in B\)

Step 1

Concept

In ((2,3)), the first component (2) is in (A) and the second (3) is in (B). Check both positions separately for membership.

Step 2

Why this answer is correct

The correct answer is A. हां, क्योंकि \(2\in A\) और \(3\in B\) / Yes, because \(2\in A\) and \(3\in B\). In ((2,3)), the first component (2) is in (A) and the second (3) is in (B). Check both positions separately for membership.

Step 3

Exam Tip

((2,3)) में पहला घटक (2) है जो (A) में है और दूसरा (3) है जो (B) में है। सदस्यता जांचते समय दोनों स्थान अलग-अलग जांचें।

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यदि \((p,q)\in A\times B\) है, तो कौन सा कथन हमेशा सही है?

If \((p,q)\in A\times B\), which statement is always true?

Explanation opens after your attempt
Correct Answer

A. \(p\in A\) और \(q\in B\)\(p\in A\) and \(q\in B\)

Step 1

Concept

In \(A\times B\), the first component of an ordered pair is from (A) and the second is from (B). This rule solves most membership questions.

Step 2

Why this answer is correct

The correct answer is A. \(p\in A\) और \(q\in B\) / \(p\in A\) and \(q\in B\). In \(A\times B\), the first component of an ordered pair is from (A) and the second is from (B). This rule solves most membership questions.

Step 3

Exam Tip

\(A\times B\) में क्रमित युग्म का पहला घटक (A) से और दूसरा (B) से होता है। इसी नियम से अधिकतर सदस्यता प्रश्न हल होते हैं।

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सामान्य रूप से \(A\times B\) और \(B\times A\) के बारे में सही कथन कौन सा है?

Generally, which statement about \(A\times B\) and \(B\times A\) is correct?

Explanation opens after your attempt
Correct Answer

B. \(A\times B\) और \(B\times A\) सामान्यतः समान नहीं होते\(A\times B\) and \(B\times A\) are generally not equal

Step 1

Concept

Order matters in Cartesian product, so \(A\times B\) is generally different from \(B\times A\). Reversed order is a common exam mistake.

Step 2

Why this answer is correct

The correct answer is B. \(A\times B\) और \(B\times A\) सामान्यतः समान नहीं होते / \(A\times B\) and \(B\times A\) are generally not equal. Order matters in Cartesian product, so \(A\times B\) is generally different from \(B\times A\). Reversed order is a common exam mistake.

Step 3

Exam Tip

कार्तीय गुणन में क्रम महत्वपूर्ण है, इसलिए \(A\times B\) सामान्यतः \(B\times A\) से अलग होता है। परीक्षा में उल्टा क्रम गलती कराता है।

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यदि \(A=\{1\}\) और \(B=\{1,2\}\) है, तो कौन सा कथन सही है?

If \(A=\{1\}\) and \(B=\{1,2\}\), which statement is correct?

Explanation opens after your attempt
Correct Answer

B. \(A\times B\ne B\times A\)

Step 1

Concept

\(A\times B={(1,1),(1,2)}\) and \(B\times A={(1,1),(2,1)}\). Similar looking numbers do not remove the importance of order.

Step 2

Why this answer is correct

The correct answer is B. \(A\times B\ne B\times A\). \(A\times B={(1,1),(1,2)}\) and \(B\times A={(1,1),(2,1)}\). Similar looking numbers do not remove the importance of order.

Step 3

Exam Tip

\(A\times B={(1,1),(1,2)}\) और \(B\times A={(1,1),(2,1)}\) हैं। केवल दिखने में समान संख्याएं होने से क्रम नहीं बदलता।

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क्रमित युग्म ((5,7)) में पहला घटक कौन सा है?

In the ordered pair ((5,7)), what is the first component?

Explanation opens after your attempt
Correct Answer

A. (5)

Step 1

Concept

In ((5,7)), the first component is (5) and the second component is (7). In Cartesian product, the first component comes from the first set.

Step 2

Why this answer is correct

The correct answer is A. (5). In ((5,7)), the first component is (5) and the second component is (7). In Cartesian product, the first component comes from the first set.

Step 3

Exam Tip

((5,7)) में पहला घटक (5) और दूसरा घटक (7) है। कार्तीय गुणन में पहला घटक पहले समुच्चय से आता है।

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क्रमित युग्म ((5,7)) में दूसरा घटक कौन सा है?

In the ordered pair ((5,7)), what is the second component?

Explanation opens after your attempt
Correct Answer

B. (7)

Step 1

Concept

The second component of ((5,7)) is (7). In exams, read the position inside the brackets carefully.

Step 2

Why this answer is correct

The correct answer is B. (7). The second component of ((5,7)) is (7). In exams, read the position inside the brackets carefully.

Step 3

Exam Tip

((5,7)) का दूसरा घटक (7) है। परीक्षा में कोष्ठक के अंदर स्थान को ध्यान से पढ़ें।

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यदि \(A=\{2,4\}\) और \(B=\{6,8\}\) है, तो \(A\times B\) में कुल कितने तत्व होंगे?

If \(A=\{2,4\}\) and \(B=\{6,8\}\), how many elements are in \(A\times B\)?

Explanation opens after your attempt
Correct Answer

C. (4)

Step 1

Concept

(A) has (2) elements and (B) has (2) elements, so \(2\times 2=4\). For small sets, you may also list all pairs to check.

Step 2

Why this answer is correct

The correct answer is C. (4). (A) has (2) elements and (B) has (2) elements, so \(2\times 2=4\). For small sets, you may also list all pairs to check.

Step 3

Exam Tip

(A) में (2) और (B) में (2) तत्व हैं, इसलिए \(2\times 2=4\)। छोटी सूचियों में चाहें तो सभी युग्म लिखकर भी जांचें।

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यदि \(A=\{1,2,3\}\) और \(B=\{4,5\}\) है, तो कौन सा क्रमित युग्म \(A\times B\) में है?

If \(A=\{1,2,3\}\) and \(B=\{4,5\}\), which ordered pair is in \(A\times B\)?

Explanation opens after your attempt
Correct Answer

B. ((3,5))

Step 1

Concept

In ((3,5)), \(3\in A\) and \(5\in B\), so it belongs to \(A\times B\). Other options have wrong position or membership.

Step 2

Why this answer is correct

The correct answer is B. ((3,5)). In ((3,5)), \(3\in A\) and \(5\in B\), so it belongs to \(A\times B\). Other options have wrong position or membership.

Step 3

Exam Tip

((3,5)) में \(3\in A\) और \(5\in B\), इसलिए यह \(A\times B\) में है। बाकी विकल्पों में घटक का स्थान या सदस्यता गलत है।

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यदि \(A=\{1,2\}\) और \(B=\{3,4\}\) है, तो कौन सा क्रमित युग्म \(A\times B\) में नहीं है?

If \(A=\{1,2\}\) and \(B=\{3,4\}\), which ordered pair is not in \(A\times B\)?

Explanation opens after your attempt
Correct Answer

D. ((3,1))

Step 1

Concept

In ((3,1)), the first component (3) is not in (A). To find the wrong option, check the first component first.

Step 2

Why this answer is correct

The correct answer is D. ((3,1)). In ((3,1)), the first component (3) is not in (A). To find the wrong option, check the first component first.

Step 3

Exam Tip

((3,1)) में पहला घटक (3) है जो (A) में नहीं है। गलत विकल्प पहचानने के लिए पहले घटक की जांच पहले करें।

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यदि \(A=\{0\}\) और \(B=\{1,2,3\}\) है, तो \(A\times B\) कौन सा है?

If \(A=\{0\}\) and \(B=\{1,2,3\}\), which is \(A\times B\)?

Explanation opens after your attempt
Correct Answer

A. ({(0,1),(0,2),(0,3)})

Step 1

Concept

The only element (0) of (A) stays in the first position and all elements of (B) come in the second position. Do not reverse order even for singleton sets.

Step 2

Why this answer is correct

The correct answer is A. ({(0,1),(0,2),(0,3)}). The only element (0) of (A) stays in the first position and all elements of (B) come in the second position. Do not reverse order even for singleton sets.

Step 3

Exam Tip

(A) का एकमात्र तत्व (0) पहले स्थान पर रहेगा और (B) के सभी तत्व दूसरे स्थान पर आएंगे। एकल तत्व वाले समुच्चय में भी क्रम न बदलें।

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यदि (n(A)=3) है, तो (n\(A\times A\)) कितना होगा?

If (n(A)=3), what is (n\(A\times A\))?

Explanation opens after your attempt
Correct Answer

C. (9)

Step 1

Concept

(n\(A\times A\)=n(A)n(A)=3\times 3=9). Even with the same set, the counts are multiplied.

Step 2

Why this answer is correct

The correct answer is C. (9). (n\(A\times A\)=n(A)n(A)=3\times 3=9). Even with the same set, the counts are multiplied.

Step 3

Exam Tip

(n\(A\times A\)=n(A)n(A)=3\times 3=9)। समान समुच्चय के साथ भी गुणा ही किया जाता है।

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यदि (n\(A\times B\)=12) और (n(A)=3) है, तो (n(B)) कितना होगा?

If (n\(A\times B\)=12) and (n(A)=3), what is (n(B))?

Explanation opens after your attempt
Correct Answer

B. (4)

Step 1

Concept

(n\(A\times B\)=n(A)n(B)), so (12=3n(B)) and (n(B)=4). Divide to find the unknown count.

Step 2

Why this answer is correct

The correct answer is B. (4). (n\(A\times B\)=n(A)n(B)), so (12=3n(B)) and (n(B)=4). Divide to find the unknown count.

Step 3

Exam Tip

(n\(A\times B\)=n(A)n(B)), इसलिए (12=3n(B)) और (n(B)=4)। अज्ञात संख्या निकालने के लिए भाग दें।

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यदि \(A\times B=\varnothing\) और \(A\ne\varnothing\) है, तो (B) के बारे में क्या निष्कर्ष सही है?

If \(A\times B=\varnothing\) and \(A\ne\varnothing\), what conclusion about (B) is correct?

Explanation opens after your attempt
Correct Answer

A. \(B=\varnothing\)

Step 1

Concept

If (A) is not empty and still no pair is formed, then (B) must be empty. If a Cartesian product is empty, at least one set is empty.

Step 2

Why this answer is correct

The correct answer is A. \(B=\varnothing\). If (A) is not empty and still no pair is formed, then (B) must be empty. If a Cartesian product is empty, at least one set is empty.

Step 3

Exam Tip

यदि (A) खाली नहीं है फिर भी कोई युग्म नहीं बना, तो (B) खाली होना चाहिए। कार्तीय गुणन खाली होने पर कम से कम एक समुच्चय खाली होता है।

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यदि \(A=\{1,2\}\) और \(B=\{2,3\}\) है, तो \(A\times B\) का सही वर्णन कौन सा है?

If \(A=\{1,2\}\) and \(B=\{2,3\}\), which description of \(A\times B\) is correct?

Explanation opens after your attempt
Correct Answer

A. (A) से पहला घटक और (B) से दूसरा घटक वाले सभी युग्मAll pairs with first component from (A) and second component from (B)

Step 1

Concept

In \(A\times B\), the first position is filled from (A) and the second from (B). Confusing it with \(A\cup B\) is a common mistake.

Step 2

Why this answer is correct

The correct answer is A. (A) से पहला घटक और (B) से दूसरा घटक वाले सभी युग्म / All pairs with first component from (A) and second component from (B). In \(A\times B\), the first position is filled from (A) and the second from (B). Confusing it with \(A\cup B\) is a common mistake.

Step 3

Exam Tip

\(A\times B\) में पहला स्थान (A) और दूसरा स्थान (B) से भरा जाता है। इसे \(A\cup B\) समझना आम गलती है।

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क्रमित युग्मों के लिए ((1,2)) और ((2,1)) के बारे में सही कथन कौन सा है?

For ordered pairs, which statement about ((1,2)) and ((2,1)) is correct?

Explanation opens after your attempt
Correct Answer

B. ((1,2)\ne (2,1))

Step 1

Concept

Changing positions changes an ordered pair. Equality holds only when corresponding components are equal.

Step 2

Why this answer is correct

The correct answer is B. ((1,2)\ne (2,1)). Changing positions changes an ordered pair. Equality holds only when corresponding components are equal.

Step 3

Exam Tip

क्रमित युग्म में स्थान बदलने से युग्म बदल जाता है। केवल तब समानता होगी जब दोनों संबंधित घटक समान हों।

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यदि \(A=\{1,2\}\) है, तो \(A\times A\) कौन सा है?

If \(A=\{1,2\}\), which is \(A\times A\)?

Explanation opens after your attempt
Correct Answer

A. ({(1,1),(1,2),(2,1),(2,2)})

Step 1

Concept

In \(A\times A\), every element of (A) pairs with every element of (A). Taking only equal component pairs is incomplete.

Step 2

Why this answer is correct

The correct answer is A. ({(1,1),(1,2),(2,1),(2,2)}). In \(A\times A\), every element of (A) pairs with every element of (A). Taking only equal component pairs is incomplete.

Step 3

Exam Tip

\(A\times A\) में (A) का हर तत्व (A) के हर तत्व के साथ युग्म बनाता है। केवल समान घटक वाले युग्म लेना अधूरा उत्तर है।

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यदि \(A=\{9\}\) और \(B=\varnothing\) है, तो (n\(A\times B\)) कितना होगा?

If \(A=\{9\}\) and \(B=\varnothing\), what is (n\(A\times B\))?

Explanation opens after your attempt
Correct Answer

A. (0)

Step 1

Concept

There is no element in (B), so no second component is available. Since the number is asked, the answer is (0).

Step 2

Why this answer is correct

The correct answer is A. (0). There is no element in (B), so no second component is available. Since the number is asked, the answer is (0).

Step 3

Exam Tip

(B) में कोई तत्व नहीं है, इसलिए कोई दूसरा घटक नहीं मिल सकता। संख्या पूछी गई है, इसलिए उत्तर (0) है।

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यदि \(A=\{4\}\) और \(B=\{6\}\) है, तो \(A\times B\) में कितने तत्व होंगे?

If \(A=\{4\}\) and \(B=\{6\}\), how many elements are in \(A\times B\)?

Explanation opens after your attempt
Correct Answer

B. (1)

Step 1

Concept

Both sets have one element each, so only ((4,6)) is formed. The product of singleton sets gives one ordered pair.

Step 2

Why this answer is correct

The correct answer is B. (1). Both sets have one element each, so only ((4,6)) is formed. The product of singleton sets gives one ordered pair.

Step 3

Exam Tip

दोनों समुच्चय में एक-एक तत्व है, इसलिए केवल ((4,6)) बनेगा। एकल समुच्चयों का गुणन एक क्रमित युग्म देता है।

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यदि ((a,3)=(2,b)) है, तो (a) और (b) के मान क्या हैं?

If ((a,3)=(2,b)), what are the values of (a) and (b)?

Explanation opens after your attempt
Correct Answer

B. (a=2,\ b=3)

Step 1

Concept

In equality of ordered pairs, first components are equal and second components are equal. Hence (a=2) and (b=3).

Step 2

Why this answer is correct

The correct answer is B. (a=2,\ b=3). In equality of ordered pairs, first components are equal and second components are equal. Hence (a=2) and (b=3).

Step 3

Exam Tip

क्रमित युग्मों की समानता में पहले घटक बराबर और दूसरे घटक बराबर होते हैं। इसलिए (a=2) और (b=3)।

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समुच्चय रूप में \(A\times B\) को सही तरह कैसे लिखा जाता है?

How is \(A\times B\) correctly written in set-builder form?

Explanation opens after your attempt
Correct Answer

A. \({(x,y):x\in A,\ y\in B}\)

Step 1

Concept

By definition, \(A\times B={(x,y):x\in A,\ y\in B}\). In set-builder form, keep the order of components unchanged.

Step 2

Why this answer is correct

The correct answer is A. \({(x,y):x\in A,\ y\in B}\). By definition, \(A\times B={(x,y):x\in A,\ y\in B}\). In set-builder form, keep the order of components unchanged.

Step 3

Exam Tip

परिभाषा के अनुसार \(A\times B={(x,y):x\in A,\ y\in B}\)। सेट-बिल्डर रूप में घटकों का क्रम वही रखें।

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यदि \(A=\{1,2\}\) और \(B=\{2\}\) है, तो \(B\times A\) क्या होगा?

If \(A=\{1,2\}\) and \(B=\{2\}\), what is \(B\times A\)?

Explanation opens after your attempt
Correct Answer

B. ({(2,1),(2,2)})

Step 1

Concept

In \(B\times A\), the first component is (2) from (B) and the second is (1) or (2) from (A). Reversing the order changes the answer.

Step 2

Why this answer is correct

The correct answer is B. ({(2,1),(2,2)}). In \(B\times A\), the first component is (2) from (B) and the second is (1) or (2) from (A). Reversing the order changes the answer.

Step 3

Exam Tip

\(B\times A\) में पहला घटक (B) से (2) होगा और दूसरा घटक (A) से (1) या (2) होगा। क्रम बदलने से उत्तर बदलता है।

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सीमित समुच्चयों के लिए (n\(A\times B\)) और (n\(B\times A\)) के बारे में सही कथन कौन सा है?

For finite sets, which statement about (n\(A\times B\)) and (n\(B\times A\)) is correct?

Explanation opens after your attempt
Correct Answer

A. (n\(A\times B\)=n\(B\times A\))

Step 1

Concept

Both counts are (n(A)n(B)), so the numbers are equal. Remember that counts may be equal even when the sets are different.

Step 2

Why this answer is correct

The correct answer is A. (n\(A\times B\)=n\(B\times A\)). Both counts are (n(A)n(B)), so the numbers are equal. Remember that counts may be equal even when the sets are different.

Step 3

Exam Tip

दोनों की संख्या (n(A)n(B)) होती है, इसलिए संख्याएं बराबर होती हैं। ध्यान रखें कि संख्या बराबर हो सकती है पर समुच्चय अलग हो सकते हैं।

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यदि \(A=\{-1,1\}\) और \(B=\{0\}\) है, तो \(A\times B\) क्या है?

If \(A=\{-1,1\}\) and \(B=\{0\}\), what is \(A\times B\)?

Explanation opens after your attempt
Correct Answer

A. ({(-1,0),(1,0)})

Step 1

Concept

Both elements of (A) come in the first position and (0) from (B) comes in the second position. A negative number is used like any other element.

Step 2

Why this answer is correct

The correct answer is A. ({(-1,0),(1,0)}). Both elements of (A) come in the first position and (0) from (B) comes in the second position. A negative number is used like any other element.

Step 3

Exam Tip

(A) के दोनों तत्व पहले स्थान पर और (B) का (0) दूसरे स्थान पर आता है। ऋणात्मक संख्या भी सामान्य तत्व की तरह ही प्रयोग होती है।

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यदि \(A=\{3,6\}\) और \(B=\{1,2\}\) है, तो कौन सा युग्म \(A\times B\) का तत्व है?

If \(A=\{3,6\}\) and \(B=\{1,2\}\), which pair is an element of \(A\times B\)?

Explanation opens after your attempt
Correct Answer

C. ((6,2))

Step 1

Concept

In ((6,2)), \(6\in A\) and \(2\in B\), so it is correct. Having both numbers present is not enough; their positions must also be correct.

Step 2

Why this answer is correct

The correct answer is C. ((6,2)). In ((6,2)), \(6\in A\) and \(2\in B\), so it is correct. Having both numbers present is not enough; their positions must also be correct.

Step 3

Exam Tip

((6,2)) में \(6\in A\) और \(2\in B\), इसलिए यह सही है। केवल दोनों संख्याएं मौजूद होना काफी नहीं, स्थान भी सही होना चाहिए।

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यदि \(A=\{0,1\}\) है, तो \(A\times A\) में कौन सा युग्म अवश्य होगा?

If \(A=\{0,1\}\), which pair must be in \(A\times A\)?

Explanation opens after your attempt
Correct Answer

B. ((1,0))

Step 1

Concept

In ((1,0)), both components are from (A), so it belongs to \(A\times A\). In \(A\times A\), elements of (A) fill both positions.

Step 2

Why this answer is correct

The correct answer is B. ((1,0)). In ((1,0)), both components are from (A), so it belongs to \(A\times A\). In \(A\times A\), elements of (A) fill both positions.

Step 3

Exam Tip

((1,0)) में दोनों घटक (A) से हैं, इसलिए यह \(A\times A\) में होगा। \(A\times A\) में दोनों स्थानों पर (A) के तत्व आते हैं।

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यदि \(A\subset B\) है, तो किसी समुच्चय (C) के लिए कौन सा कथन सही है?

If \(A\subset B\), which statement is correct for any set (C)?

Explanation opens after your attempt
Correct Answer

A. \(A\times C\subset B\times C\)

Step 1

Concept

If every element of (A) is in (B), then every pair of \(A\times C\) is also in \(B\times C\). In subset questions, focus on the first component.

Step 2

Why this answer is correct

The correct answer is A. \(A\times C\subset B\times C\). If every element of (A) is in (B), then every pair of \(A\times C\) is also in \(B\times C\). In subset questions, focus on the first component.

Step 3

Exam Tip

यदि (A) का हर तत्व (B) में है, तो \(A\times C\) का हर युग्म \(B\times C\) में भी होगा। उपसमुच्चय वाले प्रश्न में पहले घटक पर ध्यान दें।

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यदि \(C=\varnothing\) है, तो \(A\times C\) क्या होगा?

If \(C=\varnothing\), what is \(A\times C\)?

Explanation opens after your attempt
Correct Answer

A. \(\varnothing\)

Step 1

Concept

There is no element in (C) for the second component, so no ordered pair is formed. Cartesian product with an empty set is empty.

Step 2

Why this answer is correct

The correct answer is A. \(\varnothing\). There is no element in (C) for the second component, so no ordered pair is formed. Cartesian product with an empty set is empty.

Step 3

Exam Tip

दूसरे घटक के लिए (C) में कोई तत्व नहीं है, इसलिए कोई क्रमित युग्म नहीं बनेगा। खाली समुच्चय के साथ कार्तीय गुणन खाली होता है।

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निम्न में से क्रमित युग्म का सही रूप कौन सा है?

Which of the following is the correct form of an ordered pair?

Explanation opens after your attempt
Correct Answer

A. ((a,b))

Step 1

Concept

An ordered pair is written as ((a,b)), while ({a,b}) is a set. In exams, notice the difference between parentheses and braces.

Step 2

Why this answer is correct

The correct answer is A. ((a,b)). An ordered pair is written as ((a,b)), while ({a,b}) is a set. In exams, notice the difference between parentheses and braces.

Step 3

Exam Tip

क्रमित युग्म को ((a,b)) के रूप में लिखा जाता है, जबकि ({a,b}) समुच्चय है। परीक्षा में कोष्ठक और मध्यम कोष्ठक का अंतर पहचानें।

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कार्तीय गुणन में क्रम क्यों महत्वपूर्ण है?

Why is order important in Cartesian product?

Explanation opens after your attempt
Correct Answer

A. ((a,b)) और ((b,a)) सामान्यतः अलग होते हैं((a,b)) and ((b,a)) are generally different

Step 1

Concept

The first and second positions in an ordered pair have different meanings. Therefore, do not generally treat ((a,b)) and ((b,a)) as equal.

Step 2

Why this answer is correct

The correct answer is A. ((a,b)) और ((b,a)) सामान्यतः अलग होते हैं / ((a,b)) and ((b,a)) are generally different. The first and second positions in an ordered pair have different meanings. Therefore, do not generally treat ((a,b)) and ((b,a)) as equal.

Step 3

Exam Tip

क्रमित युग्म में पहला और दूसरा स्थान अलग अर्थ रखते हैं। इसलिए ((a,b)) और ((b,a)) को सामान्यतः समान न मानें।

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यदि (n(A)=m) और (n(B)=n) है, तो (n\(A\times B\)) का सूत्र क्या है?

If (n(A)=m) and (n(B)=n), what is the formula for (n\(A\times B\))?

Explanation opens after your attempt
Correct Answer

B. (mn)

Step 1

Concept

In Cartesian product, each element of (A) pairs with every element of (B), so the total count is (mn). For counting questions, multiply, do not add.

Step 2

Why this answer is correct

The correct answer is B. (mn). In Cartesian product, each element of (A) pairs with every element of (B), so the total count is (mn). For counting questions, multiply, do not add.

Step 3

Exam Tip

कार्तीय गुणन में प्रत्येक (A) तत्व (B) के हर तत्व से जुड़ता है, इसलिए कुल संख्या (mn) होती है। गिनती वाले प्रश्न में जोड़ नहीं, गुणा करें।

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यदि \(A=\{1,2\}\) और \(B=\{3,4\}\) है, तो इनमें से कौन सा समुच्चय \(A\times B\) है?

If \(A=\{1,2\}\) and \(B=\{3,4\}\), which set is \(A\times B\)?

Explanation opens after your attempt
Correct Answer

A. ({(1,3),(1,4),(2,3),(2,4)})

Step 1

Concept

In \(A\times B\), (1,2) from (A) come first and (3,4) from (B) come second. The full list should have \(2\times 2=4\) pairs.

Step 2

Why this answer is correct

The correct answer is A. ({(1,3),(1,4),(2,3),(2,4)}). In \(A\times B\), (1,2) from (A) come first and (3,4) from (B) come second. The full list should have \(2\times 2=4\) pairs.

Step 3

Exam Tip

\(A\times B\) में (A) के (1,2) पहले स्थान पर और (B) के (3,4) दूसरे स्थान पर आते हैं। पूरी सूची में \(2\times 2=4\) युग्म होने चाहिए।

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यदि \((x,y)\in {1,2}\times{3}\) है, तो (y) का संभव मान क्या है?

If \((x,y)\in {1,2}\times{3}\), what is the possible value of (y)?

Explanation opens after your attempt
Correct Answer

C. (3)

Step 1

Concept

The second component comes from the second set ({3}), so (y=3). Use the position of the component to find the answer.

Step 2

Why this answer is correct

The correct answer is C. (3). The second component comes from the second set ({3}), so (y=3). Use the position of the component to find the answer.

Step 3

Exam Tip

दूसरा घटक दूसरे समुच्चय ({3}) से आता है, इसलिए (y=3)। घटक की स्थिति देखकर उत्तर निकालें।

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यदि \((x,y)\in {4,5}\times{8}\) है, तो (x) का संभव मान कौन सा हो सकता है?

If \((x,y)\in {4,5}\times{8}\), which can be a possible value of (x)?

Explanation opens after your attempt
Correct Answer

A. (4) या (5)(4) or (5)

Step 1

Concept

The first component comes from the first set ({4,5}), so (x) can be (4) or (5). Do not mix the first and second components.

Step 2

Why this answer is correct

The correct answer is A. (4) या (5) / (4) or (5). The first component comes from the first set ({4,5}), so (x) can be (4) or (5). Do not mix the first and second components.

Step 3

Exam Tip

पहला घटक पहले समुच्चय ({4,5}) से आता है, इसलिए (x) (4) या (5) हो सकता है। पहले और दूसरे घटक को न मिलाएं।

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यदि \(A=\{1,3\}\) और \(B=\{2,4,6\}\) है, तो \(A\times B\) में (1) को पहले घटक के रूप में लेकर कितने युग्म बनेंगे?

If \(A=\{1,3\}\) and \(B=\{2,4,6\}\), how many pairs in \(A\times B\) have (1) as the first component?

Explanation opens after your attempt
Correct Answer

C. (3)

Step 1

Concept

When the first component (1) is fixed, the second component can be any of the (3) elements of (B). With a fixed first component, the number of pairs is (n(B)).

Step 2

Why this answer is correct

The correct answer is C. (3). When the first component (1) is fixed, the second component can be any of the (3) elements of (B). With a fixed first component, the number of pairs is (n(B)).

Step 3

Exam Tip

पहला घटक (1) तय होने पर दूसरा घटक (B) के (3) तत्वों में से कोई भी हो सकता है। निश्चित पहले घटक के साथ युग्मों की संख्या (n(B)) होती है।

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यदि \(X=\{2,4\}\) और \(Y=\{1,3,5\}\) है, तो (n\(Y\times X\)) कितना होगा?

If \(X=\{2,4\}\) and \(Y=\{1,3,5\}\), what is (n\(Y\times X\))?

Explanation opens after your attempt
Correct Answer

B. (6)

Step 1

Concept

(n(Y)=3) and (n(X)=2), so (n\(Y\times X\)=3\times 2=6). The same multiplication rule applies even when set names change.

Step 2

Why this answer is correct

The correct answer is B. (6). (n(Y)=3) and (n(X)=2), so (n\(Y\times X\)=3\times 2=6). The same multiplication rule applies even when set names change.

Step 3

Exam Tip

(n(Y)=3) और (n(X)=2), इसलिए (n\(Y\times X\)=3\times 2=6)। नाम बदलने पर भी वही गुणा नियम लागू होता है।

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यदि \(A=\{a\}\) और \(B={b_1,b_2}\) है, तो \(A\times B\) कौन सा है?

If \(A=\{a\}\) and \(B={b_1,b_2}\), which is \(A\times B\)?

Explanation opens after your attempt
Correct Answer

A. ({\(a,b_1\),\(a,b_2\)})

Step 1

Concept

The element (a) of (A) stays in the first position and both elements of (B) come in the second position. The same rule works for letter elements too.

Step 2

Why this answer is correct

The correct answer is A. ({\(a,b_1\),\(a,b_2\)}). The element (a) of (A) stays in the first position and both elements of (B) come in the second position. The same rule works for letter elements too.

Step 3

Exam Tip

(A) का (a) पहले स्थान पर रहेगा और (B) के दोनों तत्व दूसरे स्थान पर आएंगे। अक्षरों वाले प्रश्नों में भी नियम वही रहता है।

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यदि (n\(A\times B\)=8) और (n(B)=2) है, तो (n(A)) कितना होगा?

If (n\(A\times B\)=8) and (n(B)=2), what is (n(A))?

Explanation opens after your attempt
Correct Answer

B. (4)

Step 1

Concept

\(8=n(A)\times 2\), so (n(A)=4). For an unknown count, divide the total pairs by the known count.

Step 2

Why this answer is correct

The correct answer is B. (4). \(8=n(A)\times 2\), so (n(A)=4). For an unknown count, divide the total pairs by the known count.

Step 3

Exam Tip

\(8=n(A)\times 2\), इसलिए (n(A)=4)। अज्ञात संख्या के लिए कुल युग्मों को ज्ञात संख्या से भाग दें।

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कौन सा कथन \(A\times B\) के लिए सही है?

Which statement is true for \(A\times B\)?

Explanation opens after your attempt
Correct Answer

A. \((a,b)\in A\times B\Rightarrow a\in A,\ b\in B\)

Step 1

Concept

The basic condition of Cartesian product is that the first component is from (A) and the second from (B). Remember this statement like a definition.

Step 2

Why this answer is correct

The correct answer is A. \((a,b)\in A\times B\Rightarrow a\in A,\ b\in B\). The basic condition of Cartesian product is that the first component is from (A) and the second from (B). Remember this statement like a definition.

Step 3

Exam Tip

कार्तीय गुणन की मूल शर्त है कि पहला घटक (A) से और दूसरा (B) से हो। इस कथन को परिभाषा की तरह याद रखें।

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यदि \(A=\{1,2,3\}\) और \(B=\{2,4\}\) है, तो \(A\times B\) में दूसरे घटक (4) वाले कितने युग्म होंगे?

If \(A=\{1,2,3\}\) and \(B=\{2,4\}\), how many pairs in \(A\times B\) have second component (4)?

Explanation opens after your attempt
Correct Answer

C. (3)

Step 1

Concept

When the second component (4) is fixed, the first component can be any of the (3) elements of (A). With a fixed second component, the count is (n(A)).

Step 2

Why this answer is correct

The correct answer is C. (3). When the second component (4) is fixed, the first component can be any of the (3) elements of (A). With a fixed second component, the count is (n(A)).

Step 3

Exam Tip

दूसरा घटक (4) तय होने पर पहला घटक (A) के (3) तत्वों में से कोई भी हो सकता है। निश्चित दूसरे घटक के साथ संख्या (n(A)) होती है।

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यदि \(A=\{2,5\}\) और \(B=\{7,8\}\) है, तो \(A\times B\) में पहले घटक (2) वाले कितने युग्म होंगे?

If \(A=\{2,5\}\) and \(B=\{7,8\}\), how many pairs in \(A\times B\) have first component (2)?

Explanation opens after your attempt
Correct Answer

B. (2)

Step 1

Concept

The first component (2) is fixed and the second component is chosen from the (2) elements of (B). Therefore, there are (2) such pairs.

Step 2

Why this answer is correct

The correct answer is B. (2). The first component (2) is fixed and the second component is chosen from the (2) elements of (B). Therefore, there are (2) such pairs.

Step 3

Exam Tip

पहला घटक (2) तय है और दूसरा घटक (B) के (2) तत्वों में से चुना जाएगा। इसलिए ऐसे (2) युग्म होंगे।

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यदि \(A=\{1,2\}\) और \(B=\{3,1\}\) है, तो क्या \((3,1)\in A\times B\) है?

If \(A=\{1,2\}\) and \(B=\{3,1\}\), is \((3,1)\in A\times B\)?

Explanation opens after your attempt
Correct Answer

B. नहीं, क्योंकि \(3\notin A\)No, because \(3\notin A\)

Step 1

Concept

The first component of ((3,1)) is (3), but \(3\notin A\). A correct second component alone does not make the whole pair correct.

Step 2

Why this answer is correct

The correct answer is B. नहीं, क्योंकि \(3\notin A\) / No, because \(3\notin A\). The first component of ((3,1)) is (3), but \(3\notin A\). A correct second component alone does not make the whole pair correct.

Step 3

Exam Tip

((3,1)) का पहला घटक (3) है, लेकिन \(3\notin A\)। दूसरे घटक के सही होने से पूरा युग्म सही नहीं हो जाता।

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यदि \(A=\{0\}\) और \(B=\{1\}\) है, तो \(A\times B\) और \(B\times A\) के बारे में सही कथन कौन सा है?

If \(A=\{0\}\) and \(B=\{1\}\), which statement about \(A\times B\) and \(B\times A\) is correct?

Explanation opens after your attempt
Correct Answer

A. \(A\times B={(0,1)}\) और \(B\times A={(1,0)}\)\(A\times B={(0,1)}\) and \(B\times A={(1,0)}\)

Step 1

Concept

In \(A\times B\), (0) is first and (1) is second, while in \(B\times A\) the order is reversed. Order remains important even with one element in each set.

Step 2

Why this answer is correct

The correct answer is A. \(A\times B={(0,1)}\) और \(B\times A={(1,0)}\) / \(A\times B={(0,1)}\) and \(B\times A={(1,0)}\). In \(A\times B\), (0) is first and (1) is second, while in \(B\times A\) the order is reversed. Order remains important even with one element in each set.

Step 3

Exam Tip

\(A\times B\) में (0) पहले और (1) दूसरे स्थान पर है, जबकि \(B\times A\) में क्रम उल्टा है। एक-एक तत्व होने पर भी क्रम महत्वपूर्ण रहता है।

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यदि \(A=\{1,2\}\), \(B=\{3\}\) और \(C=\{4,5\}\) हैं, तो (n\(A\times B\times C\)) कितना होगा?

If \(A=\{1,2\}\), \(B=\{3\}\), and \(C=\{4,5\}\), what is (n\(A\times B\times C\))?

Explanation opens after your attempt
Correct Answer

B. (4)

Step 1

Concept

For the product of three sets, the count is (n(A)n(B)n(C)), so \(2\times 1\times 2=4\). This counts ordered triples.

Step 2

Why this answer is correct

The correct answer is B. (4). For the product of three sets, the count is (n(A)n(B)n(C)), so \(2\times 1\times 2=4\). This counts ordered triples.

Step 3

Exam Tip

तीन समुच्चयों के गुणन में संख्या (n(A)n(B)n(C)) होती है, इसलिए \(2\times 1\times 2=4\)। यह क्रमित त्रिकों की गिनती है।

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\(यदि पेय समुच्चय (A={\)चाय,कॉफी\(}) और आकार समुच्चय (B={\)छोटा,बड़ा\(}) है, तो (A\times B) में कुल कितने विकल्प होंगे\)?

\(If drink set (A={\)tea,coffee\(}) and size set (B={\)small,large\(}) are given, how many options are in (A\times B)\)?

Explanation opens after your attempt
Correct Answer

C. (4) विकल्प(4) options

Step 1

Concept

(A) has (2) elements and (B) has (2) elements, so \(2\times 2=4\) options are formed. Real-life choices can also be counted by Cartesian product.

Step 2

Why this answer is correct

The correct answer is C. (4) विकल्प / (4) options. (A) has (2) elements and (B) has (2) elements, so \(2\times 2=4\) options are formed. Real-life choices can also be counted by Cartesian product.

Step 3

Exam Tip

(A) में (2) और (B) में (2) तत्व हैं, इसलिए \(2\times 2=4\) विकल्प बनते हैं। वास्तविक जीवन के चुनाव भी कार्तीय गुणन से गिने जा सकते हैं।

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यदि \(A=\{1,2,3\}\) और \(B=\{0,1\}\) हैं, तो \(A\times B\) को निर्देशांक तल पर बिंदुओं के रूप में दिखाने पर कितने बिंदु मिलेंगे?

If \(A=\{1,2,3\}\) and \(B=\{0,1\}\), how many points are obtained when \(A\times B\) is shown as points on the coordinate plane?

Explanation opens after your attempt
Correct Answer

C. (6) बिंदु(6) points

Step 1

Concept

(n\(A\times B\)=n(A)n(B)=3\times 2=6), so there are (6) points. Cartesian product can also be understood as coordinate points.

Step 2

Why this answer is correct

The correct answer is C. (6) बिंदु / (6) points. (n\(A\times B\)=n(A)n(B)=3\times 2=6), so there are (6) points. Cartesian product can also be understood as coordinate points.

Step 3

Exam Tip

(n\(A\times B\)=n(A)n(B)=3\times 2=6), इसलिए कुल (6) बिंदु मिलेंगे। कार्तीय गुणन को निर्देशांक बिंदुओं की तरह भी समझ सकते हैं।

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Mathematics Relations And Functions FAQs

What will I learn in Relations And Functions?

Related questions grouped automatically for chapter-wise practice. Topics include Algebra of real functions, Cartesian product of sets, Functions as a special kind of relation, Graphs of standard functions, Real valued functions, domain and range of these functions.

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Yes, this page includes topic-wise practice such as Algebra of real functions, Cartesian product of sets, Functions as a special kind of relation, Graphs of standard functions, Real valued functions, domain and range of these functions, Relations.