Update
Muft Shiksha™ एक 100% Free Education Portal है 🇮🇳, जिसका उद्देश्य Class 9–12 के हर विद्यार्थी तक High-Quality Education को पूरी तरह मुफ्त पहुँचाना है। 🇮🇳 हम मानते हैं कि अच्छी शिक्षा किसी student की आर्थिक स्थिति पर निर्भर नहीं होनी चाहिए। 🇮🇳 हर विद्यार्थी को वही Quality Study Material, MCQs, Quizzes, Exam Preparation, Concept-Based Learning और Bilingual Support मिलना चाहिए, जो आमतौर पर महंगी Coaching या Premium Platforms में मिलता है। Muft Shiksha™ 🇮🇳 इसी सोच के साथ बनाया गया है • Muft Shiksha™ एक 100% Free Education Portal है 🇮🇳, जिसका उद्देश्य Class 9–12 के हर विद्यार्थी तक High-Quality Education को पूरी तरह मुफ्त पहुँचाना है। 🇮🇳 हम मानते हैं कि अच्छी शिक्षा किसी student की आर्थिक स्थिति पर निर्भर नहीं होनी चाहिए। 🇮🇳 हर विद्यार्थी को वही Quality Study Material, MCQs, Quizzes, Exam Preparation, Concept-Based Learning और Bilingual Support मिलना चाहिए, जो आमतौर पर महंगी Coaching या Premium Platforms में मिलता है। Muft Shiksha™ 🇮🇳 इसी सोच के साथ बनाया गया है • Muft Shiksha™ एक 100% Free Education Portal है 🇮🇳, जिसका उद्देश्य Class 9–12 के हर विद्यार्थी तक High-Quality Education को पूरी तरह मुफ्त पहुँचाना है। 🇮🇳 हम मानते हैं कि अच्छी शिक्षा किसी student की आर्थिक स्थिति पर निर्भर नहीं होनी चाहिए। 🇮🇳 हर विद्यार्थी को वही Quality Study Material, MCQs, Quizzes, Exam Preparation, Concept-Based Learning और Bilingual Support मिलना चाहिए, जो आमतौर पर महंगी Coaching या Premium Platforms में मिलता है। Muft Shiksha™ 🇮🇳 इसी सोच के साथ बनाया गया है
Subjects

Class 11 Computer Science Expert Quiz

Level 11 • 50/50 questions • 25 seconds per question.

Level readiness 50/50 Questions
Time Left 20:50 25 sec/question
RewardsCoins + XP
ModeClassic Quiz
Share
Question 1 / 50 0 score
Answered 0/50 Correct 0 Time 20:50

यदि \(U=\{1,2,3,4,5,6,7,8,9,10\}\) और \(A=\{2,3,5,7\}\) है, तो (|\mathcal{P}(A')|) कितना होगा?

If \(U=\{1,2,3,4,5,6,7,8,9,10\}\) and \(A=\{2,3,5,7\}\), what is (|\mathcal{P}(A')|)?

Explanation opens after your attempt
Correct Answer

C. (64)

Explanation

Simple Explanation

यहां (A') में (6) तत्व हैं, इसलिए (|\mathcal{P}(A')|=26=64)। परीक्षा में complement हमेशा (U) के सापेक्ष निकालें। / Here (A') has (6) elements, so (|\mathcal{P}(A')|=26=64). In exams, always find complement with respect to (U).

Open Question Page
Ask Friends
Question 2/50 Expert Mathematics Sets Class 11 Level 11

यदि \(A\subseteq U\), \(|U|=16\) और \(|\mathcal{P}(A)|=256\) है, तो \(A'\) के non-empty subsets की संख्या कितनी है?

If \(A\subseteq U\), \(|U|=16\), and \(|\mathcal{P}(A)|=256\), then how many non-empty subsets of \(A'\) are there?

Explanation opens after your attempt
Correct Answer

B. (255)

Explanation

Simple Explanation

(|\mathcal{P}(A)|=256=28), इसलिए (|A|=8) और (|A'|=8)। non-empty subsets की संख्या \(2^8-1=255\) है। / Since (|\mathcal{P}(A)|=256=28), (|A|=8) and (|A'|=8). The number of non-empty subsets is \(2^8-1=255\).

Open Question Page
Ask Friends

यदि (|U|=14), \(A\subseteq U\), और (|\mathcal{P}(A)|=64) है, तो (|\mathcal{P}(A')|) का मान क्या है?

If (|U|=14), \(A\subseteq U\), and (|\mathcal{P}(A)|=64), what is the value of (|\mathcal{P}(A')|)?

Explanation opens after your attempt
Correct Answer

C. \(2^8\)

Explanation

Simple Explanation

(|\mathcal{P}(A)|=64=26), इसलिए (|A|=6) और (|A'|=8)। अतः (|\mathcal{P}(A')|=28)। / Since (|\mathcal{P}(A)|=64=26), (|A|=6) and (|A'|=8). Hence (|\mathcal{P}(A')|=28).

Open Question Page
Ask Friends
Question 4/50 Expert Mathematics Sets Class 11 Level 11

यदि \(U=\{1,2,3,4,5,6,7,8,9,10,11\}\), \(A=\{1,4,7,10\}\) और \(B=\{2,4,6,8,10\}\) है, तो \(\mathcal {P}(A cap B)\) कितना है?

If \(U=\{1,2,3,4,5,6,7,8,9,10,11\}\), \(A=\{1,4,7,10\}\), and \(B=\{2,4,6,8,10\}\), what is \(\mathcal {P}(A cap B)\)?

Explanation opens after your attempt
Correct Answer

C. (512)

Explanation

Simple Explanation

\(A\cap B={4,10}\), इसलिए (\(A\cap B\)') में (9) तत्व हैं। अतः (|\mathcal{P}(\(A\cap B\)')|=29=512)। / \(A\cap B={4,10}\), so (\(A\cap B\)') has (9) elements. Hence (|\mathcal{P}(\(A\cap B\)')|=29=512).

Open Question Page
Ask Friends

यदि \(A={\varnothing,1,{1}}\) है, तो (\mathcal{P}(A)) में कितने सदस्य होंगे?

If \(A={\varnothing,1,{1}}\), how many members are there in (\mathcal{P}(A))?

Explanation opens after your attempt
Correct Answer

C. (8)

Explanation

Simple Explanation

समुच्चय (A) में (3) अलग-अलग तत्व हैं, इसलिए (|\mathcal{P}(A)|=23=8)। परीक्षा में \(\varnothing\), (1), और ({1}) को अलग मानें। / The set (A) has (3) distinct elements, so (|\mathcal{P}(A)|=23=8). In exams, treat \(\varnothing\), (1), and ({1}) as different.

Open Question Page
Ask Friends
Question 6/50 Expert Mathematics Sets Class 11 Level 11

यदि \(A=\{a,b,c,d,e,f,g\}\) है, तो \(\mathcal{P}(A)\) में (4) तत्वों वाले ऐसे subsets कितने हैं जिनमें (a) हो और (b) न हो?

If \(A=\{a,b,c,d,e,f,g\}\), how many (4)-element subsets in \(\mathcal{P}(A)\) contain (a) and do not contain (b)?

Explanation opens after your attempt
Correct Answer

A. (10)

Explanation

Simple Explanation

(a) fixed है और (b) excluded है, इसलिए बाकी (3) तत्व (5) तत्वों से चुनने होंगे। संख्या \(\binom{5}{3}=10\) है। / (a) is fixed and (b) is excluded, so the remaining (3) elements must be chosen from (5) elements. The number is \(\binom{5}{3}=10\).

Open Question Page
Ask Friends

यदि \(A=\{a,b,c,d\}\) है, तो (\mathcal{P}(A)) में ठीक (2) तत्वों वाले सदस्यों की संख्या कितनी है?

If \(A=\{a,b,c,d\}\), how many members of (\mathcal{P}(A)) have exactly (2) elements?

Explanation opens after your attempt
Correct Answer

B. (6)

Explanation

Simple Explanation

ऐसे subsets की संख्या \(\binom{4}{2}=6\) है। परीक्षा में fixed size subsets के लिए \(\binom{n}{r}\) लगाएं। / The number of such subsets is \(\binom{4}{2}=6\). In exams, use \(\binom{n}{r}\) for fixed-size subsets.

Open Question Page
Ask Friends

यदि \(U=\{1,2,3,4,5,6,7,8\}\), \(A=\{1,2,3\}\) और \(B=\{3,4,5\}\) है, तो (|\mathcal{P}(\(A\cup B\)')|) कितना है?

If \(U=\{1,2,3,4,5,6,7,8\}\), \(A=\{1,2,3\}\), and \(B=\{3,4,5\}\), what is (|\mathcal{P}(\(A\cup B\)')|)?

Explanation opens after your attempt
Correct Answer

C. (8)

Explanation

Simple Explanation

\(A\cup B={1,2,3,4,5}\), इसलिए complement में (3) तत्व हैं। अतः (|\mathcal{P}(\(A\cup B\)')|=23=8)। / \(A\cup B={1,2,3,4,5}\), so the complement has (3) elements. Hence (|\mathcal{P}(\(A\cup B\)')|=23=8).

Open Question Page
Ask Friends

यदि (\mathcal{P}(A)=\mathcal{P}(B)) है, तो निश्चित रूप से कौन सा कथन सही है?

If (\mathcal{P}(A)=\mathcal{P}(B)), which statement is definitely true?

Explanation opens after your attempt
Correct Answer

C. (A=B)

Explanation

Simple Explanation

क्योंकि \(A\in\mathcal{P}(A)\), इसलिए \(A\in\mathcal{P}(B)\) और \(A\subseteq B\)। इसी तरह \(B\subseteq A\), इसलिए (A=B)। / Since \(A\in\mathcal{P}(A)\), \(A\in\mathcal{P}(B)\) and \(A\subseteq B\). Similarly \(B\subseteq A\), so (A=B).

Open Question Page
Ask Friends

यदि \(A\subseteq U\), (|U|=9), और (|A'|=4) है, तो (\mathcal{P}(A)) में कितने proper subsets होंगे?

If \(A\subseteq U\), (|U|=9), and (|A'|=4), how many proper subsets are there in (\mathcal{P}(A))?

Explanation opens after your attempt
Correct Answer

B. (31)

Explanation

Simple Explanation

(|A|=9-4=5), इसलिए (A) के proper subsets \(2^5-1=31\) हैं। परीक्षा में proper subset के लिए पूरा set हटाएं। / (|A|=9-4=5), so proper subsets of (A) are \(2^5-1=31\). In exams, exclude the whole set for proper subsets.

Open Question Page
Ask Friends

यदि \(A=\{1,2,3,4,5\}\) है, तो (\mathcal{P}(A)) में ऐसे subsets कितने हैं जिनमें (1) हो लेकिन (2) न हो?

If \(A=\{1,2,3,4,5\}\), how many subsets in (\mathcal{P}(A)) contain (1) but not (2)?

Explanation opens after your attempt
Correct Answer

B. (8)

Explanation

Simple Explanation

(1) fixed है और (2) excluded है, इसलिए बाकी (3) तत्वों से \(2^3=8\) subsets बनेंगे। परीक्षा में compulsory और forbidden elements अलग करें। / (1) is fixed and (2) is excluded, so the remaining (3) elements give \(2^3=8\) subsets. In exams, separate compulsory and forbidden elements.

Open Question Page
Ask Friends

यदि \(A=\{p,q,r,s,t,u\}\) है, तो (\mathcal{P}(A)) में (p) और (q) दोनों को न रखने वाले subsets कितने हैं?

If \(A=\{p,q,r,s,t,u\}\), how many subsets in (\mathcal{P}(A)) contain neither (p) nor (q)?

Explanation opens after your attempt
Correct Answer

B. (16)

Explanation

Simple Explanation

(p) और (q) हटाने पर (4) तत्व बचते हैं, इसलिए \(2^4=16\) subsets होंगे। परीक्षा में neither condition में दोनों तत्व हटाएं। / After removing (p) and (q), (4) elements remain, so there are \(2^4=16\) subsets. In exams, remove both elements for a neither condition.

Open Question Page
Ask Friends

यदि (|A|=7) है, तो (\mathcal{P}(A)) में even cardinality वाले subsets की संख्या कितनी है?

If (|A|=7), how many subsets in (\mathcal{P}(A)) have even cardinality?

Explanation opens after your attempt
Correct Answer

B. (64)

Explanation

Simple Explanation

जब \(|A|=n\geq1\), even cardinality subsets की संख्या \(2^{n-1}\) होती है। यहां \(2^6=64\) है। / When \(|A|=n\geq1\), the number of even cardinality subsets is \(2^{n-1}\). Here it is \(2^6=64\).

Open Question Page
Ask Friends

यदि \(A=\{1,2,3,4,5,6\}\) है, तो (\mathcal{P}(A)) में odd cardinality और (6) को रखने वाले subsets कितने हैं?

If \(A=\{1,2,3,4,5,6\}\), how many subsets in (\mathcal{P}(A)) have odd cardinality and contain (6)?

Explanation opens after your attempt
Correct Answer

B. (16)

Explanation

Simple Explanation

(6) fixed है, इसलिए बाकी (5) तत्वों में even संख्या चुननी होगी। ऐसे choices \(2^{5-1}=16\) हैं। / (6) is fixed, so an even number must be chosen from the remaining (5) elements. Such choices are \(2^{5-1}=16\).

Open Question Page
Ask Friends

यदि \(A=\{1,{2,3},4\}\) है, तो निम्न में से कौन सा (\mathcal{P}(A)) का सदस्य है?

If \(A=\{1,{2,3},4\}\), which of the following is a member of (\mathcal{P}(A))?

Explanation opens after your attempt
Correct Answer

B. ({{2,3}})

Explanation

Simple Explanation

({2,3}) स्वयं (A) का तत्व है, इसलिए ({{2,3}}) (A) का subset है। परीक्षा में nested element को एक object मानें। / ({2,3}) itself is an element of (A), so ({{2,3}}) is a subset of (A). In exams, treat a nested element as one object.

Open Question Page
Ask Friends

यदि \(A=\varnothing\) है, तो (\mathcal{P}(\mathcal{P}(\mathcal{P}(A)))) में कितने सदस्य होंगे?

If \(A=\varnothing\), how many members are there in (\mathcal{P}(\mathcal{P}(\mathcal{P}(A))))?

Explanation opens after your attempt
Correct Answer

B. (4)

Explanation

Simple Explanation

(\mathcal{P}(A)) में (1) सदस्य और (\mathcal{P}(\mathcal{P}(A))) में (2) सदस्य हैं। इसलिए अगले power set में \(2^2=4\) सदस्य होंगे। / (\mathcal{P}(A)) has (1) member and (\mathcal{P}(\mathcal{P}(A))) has (2) members. Hence the next power set has \(2^2=4\) members.

Open Question Page
Ask Friends

यदि (|\mathcal{P}(\mathcal{P}(A))|=256) है, तो (|A|) कितना है?

If (|\mathcal{P}(\mathcal{P}(A))|=256), what is (|A|)?

Explanation opens after your attempt
Correct Answer

B. (3)

Explanation

Simple Explanation

यदि (|A|=n), तो (|\mathcal{P}(\mathcal{P}(A))|=2^{2^n})। \(256=2^8=2^{2^3}\), इसलिए (n=3)। / If (|A|=n), then (|\mathcal{P}(\mathcal{P}(A))|=2^{2^n}). Since \(256=2^8=2^{2^3}\), (n=3).

Open Question Page
Ask Friends

यदि \(A\subseteq B\), (|A|=3), और (|B|=6) है, तो (|\mathcal{P}(B)-\mathcal{P}(A)|) कितना है?

If \(A\subseteq B\), (|A|=3), and (|B|=6), what is (|\mathcal{P}(B)-\mathcal{P}(A)|)?

Explanation opens after your attempt
Correct Answer

C. (56)

Explanation

Simple Explanation

क्योंकि \(\mathcal{P}(A)\subseteq\mathcal{P}(B)\), इसलिए अंतर \(2^6-2^3=64-8=56\) है। परीक्षा में nested power sets में सीधे घटाएं। / Since \(\mathcal{P}(A)\subseteq\mathcal{P}(B)\), the difference is \(2^6-2^3=64-8=56\). In exams, subtract directly for nested power sets.

Open Question Page
Ask Friends

यदि \(|A\cap B|=4\) है, तो \(|\mathcal{P}(A)\cap\mathcal{P}(B)|\) कितना होगा?

If \(|A\cap B|=4\), what is \(|\mathcal{P}(A)\cap\mathcal{P}(B)|\)?

Explanation opens after your attempt
Correct Answer

C. (16)

Explanation

Simple Explanation

(\mathcal{P}(A)\cap\mathcal{P}(B)=\mathcal{P}\(A\cap B\)), इसलिए संख्या \(2^4=16\) है। परीक्षा में common subsets की identity याद रखें। / (\mathcal{P}(A)\cap\mathcal{P}(B)=\mathcal{P}\(A\cap B\)), so the number is \(2^4=16\). In exams, remember the identity for common subsets.

Open Question Page
Ask Friends

यदि \(A\cap B=\varnothing\), (|A|=4), और (|B|=3) है, तो \(|\mathcal{P}(A)\cup\mathcal{P}(B)|\) कितना है?

If \(A\cap B=\varnothing\), (|A|=4), and (|B|=3), what is \(|\mathcal{P}(A)\cup\mathcal{P}(B)|\)?

Explanation opens after your attempt
Correct Answer

C. (23)

Explanation

Simple Explanation

दोनों power sets में common member केवल \(\varnothing\) है। इसलिए \(2^4+2^3-1=16+8-1=23\)। / The only common member of the two power sets is \(\varnothing\). Therefore \(2^4+2^3-1=16+8-1=23\).

Open Question Page
Ask Friends

यदि \(U=\{1,2,3,4,5,6,7,8,9\}\), \(A=\{1,3,5,7,9\}\) और \(B=\{2,3,5,8\}\) है, तो (|\mathcal{P}((A-B)')|) कितना है?

If \(U=\{1,2,3,4,5,6,7,8,9\}\), \(A=\{1,3,5,7,9\}\), and \(B=\{2,3,5,8\}\), what is (|\mathcal{P}((A-B)')|)?

Explanation opens after your attempt
Correct Answer

C. (64)

Explanation

Simple Explanation

(A-B={1,7,9}), इसलिए उसके complement में (6) तत्व हैं। अतः power set size \(2^6=64\) है। / (A-B={1,7,9}), so its complement has (6) elements. Hence the power set size is \(2^6=64\).

Open Question Page
Ask Friends

यदि \(A=\{1,2,3,4,5,6,7\}\) है, तो (\mathcal{P}(A)) में कम से कम (6) तत्वों वाले subsets कितने हैं?

If \(A=\{1,2,3,4,5,6,7\}\), how many subsets in (\mathcal{P}(A)) have at least (6) elements?

Explanation opens after your attempt
Correct Answer

B. (8)

Explanation

Simple Explanation

कम से कम (6) तत्वों वाले subsets की संख्या \(\binom{7}{6}+\binom{7}{7}=7+1=8\) है। परीक्षा में at least का मतलब सभी बड़े sizes जोड़ना है। / The number of subsets with at least (6) elements is \(\binom{7}{6}+\binom{7}{7}=7+1=8\). In exams, at least means adding all larger sizes.

Open Question Page
Ask Friends

यदि \(A=\{1,2,3,4,5,6,7,8\}\) है, तो (\mathcal{P}(A)) में अधिकतम (2) तत्वों वाले subsets कितने हैं?

If \(A=\{1,2,3,4,5,6,7,8\}\), how many subsets in (\mathcal{P}(A)) have at most (2) elements?

Explanation opens after your attempt
Correct Answer

C. (37)

Explanation

Simple Explanation

संख्या \(\binom{8}{0}+\binom{8}{1}+\binom{8}{2}=1+8+28=37\) है। परीक्षा में at most में (0) size वाला subset भी जोड़ें। / The number is \(\binom{8}{0}+\binom{8}{1}+\binom{8}{2}=1+8+28=37\). In exams, include the subset of size (0) in at most.

Open Question Page
Ask Friends

यदि \(A=\{a,b,c,d,e\}\) है, तो (\mathcal{P}(A)) में ऐसे subsets कितने हैं जिनमें (a) और (b) में से ठीक एक हो?

If \(A=\{a,b,c,d,e\}\), how many subsets in (\mathcal{P}(A)) contain exactly one of (a) and (b)?

Explanation opens after your attempt
Correct Answer

B. (16)

Explanation

Simple Explanation

(a,b) में से ठीक एक चुनने के (2) तरीके हैं और बाकी (3) तत्व स्वतंत्र हैं। इसलिए \(2\cdot2^3=16\)। / There are (2) ways to choose exactly one of (a,b), and the remaining (3) elements are free. Hence \(2\cdot2^3=16\).

Open Question Page
Ask Friends

यदि \(A=\{1,2,3,4,5,6\}\) है, तो (\mathcal{P}(A)) में (3) तत्वों वाले subsets कितने हैं जो (1) को रखते हैं और (6) को नहीं रखते?

If \(A=\{1,2,3,4,5,6\}\), how many (3)-element subsets in (\mathcal{P}(A)) contain (1) and do not contain (6)?

Explanation opens after your attempt
Correct Answer

B. (6)

Explanation

Simple Explanation

(1) fixed और (6) excluded है, इसलिए (2) तत्व ({2,3,4,5}) से चुनेंगे। संख्या \(\binom{4}{2}=6\) है। / (1) is fixed and (6) is excluded, so choose (2) elements from ({2,3,4,5}). The number is \(\binom{4}{2}=6\).

Open Question Page
Ask Friends

यदि \(A=\{1,2,3,4,5\}\) है, तो (\mathcal{P}(A)) में ऐसे subsets कितने हैं जो ({1,2}) से disjoint हैं?

If \(A=\{1,2,3,4,5\}\), how many subsets in (\mathcal{P}(A)) are disjoint from ({1,2})?

Explanation opens after your attempt
Correct Answer

B. (8)

Explanation

Simple Explanation

Disjoint subsets केवल ({3,4,5}) से बनेंगे, इसलिए \(2^3=8\) हैं। परीक्षा में disjoint condition के लिए forbidden elements हटा दें। / Disjoint subsets are formed only from ({3,4,5}), so there are \(2^3=8\). In exams, remove forbidden elements for a disjoint condition.

Open Question Page
Ask Friends

यदि \(U=\{a,b,c,d,e,f,g,h\}\) और \(A=\{a,b,c\}\) है, तो (\mathcal{P}(U)) के कितने members (A) को subset के रूप में रखते हैं?

If \(U=\{a,b,c,d,e,f,g,h\}\) and \(A=\{a,b,c\}\), how many members of (\mathcal{P}(U)) contain (A) as a subset?

Explanation opens after your attempt
Correct Answer

C. (32)

Explanation

Simple Explanation

(A) fixed है और (U-A) के (5) तत्व optional हैं। इसलिए संख्या \(2^5=32\) है। / (A) is fixed and the (5) elements of (U-A) are optional. Therefore the number is \(2^5=32\).

Open Question Page
Ask Friends

यदि \(U=\{1,2,3,4,5,6,7\}\) और \(A=\{2,4,6\}\) है, तो (\mathcal{P}(U)) के कितने members (A') के subsets हैं?

If \(U=\{1,2,3,4,5,6,7\}\) and \(A=\{2,4,6\}\), how many members of (\mathcal{P}(U)) are subsets of (A')?

Explanation opens after your attempt
Correct Answer

B. (16)

Explanation

Simple Explanation

(A'={1,3,5,7}) में (4) तत्व हैं, इसलिए उसके subsets \(2^4=16\) हैं। परीक्षा में यह (\mathcal{P}(A')) की cardinality है। / (A'={1,3,5,7}) has (4) elements, so its subsets are \(2^4=16\). In exams, this is the cardinality of (\mathcal{P}(A')).

Open Question Page
Ask Friends

यदि \(A=\{1,2,3,4\}\) है, तो (\mathcal{P}(A)) के कितने members singleton sets हैं?

If \(A=\{1,2,3,4\}\), how many members of (\mathcal{P}(A)) are singleton sets?

Explanation opens after your attempt
Correct Answer

C. (4)

Explanation

Simple Explanation

Singleton members ({1},{2},{3},{4}) हैं, इसलिए संख्या (4) है। परीक्षा में \(\varnothing\) singleton नहीं होता। / The singleton members are ({1},{2},{3},{4}), so the number is (4). In exams, \(\varnothing\) is not a singleton.

Open Question Page
Ask Friends

यदि (|A|=4) है, तो (\mathcal{P}(\mathcal{P}(A))) में singleton members कितने होंगे?

If (|A|=4), how many singleton members are there in (\mathcal{P}(\mathcal{P}(A)))?

Explanation opens after your attempt
Correct Answer

C. (16)

Explanation

Simple Explanation

(\mathcal{P}(A)) में \(2^4=16\) सदस्य हैं, इसलिए उसके power set में (16) singleton members होंगे। परीक्षा में singleton members की संख्या base set की cardinality होती है। / (\mathcal{P}(A)) has \(2^4=16\) members, so its power set has (16) singleton members. In exams, the number of singleton members equals the cardinality of the base set.

Open Question Page
Ask Friends

यदि \(A=\{1,2,3\}\) है, तो \({{1},{2}}\subseteq\mathcal{P}(A)\) कथन कैसा है?

If \(A=\{1,2,3\}\), what is the nature of the statement \({{1},{2}}\subseteq\mathcal{P}(A)\)?

Explanation opens after your attempt
Correct Answer

A. सत्यTrue

Explanation

Simple Explanation

क्योंकि \({1}\in\mathcal{P}(A)\) और \({2}\in\mathcal{P}(A)\), इसलिए दिया गया set (\mathcal{P}(A)) का subset है। परीक्षा में outer braces को ध्यान से पढ़ें। / Since \({1}\in\mathcal{P}(A)\) and \({2}\in\mathcal{P}(A)\), the given set is a subset of (\mathcal{P}(A)). In exams, read the outer braces carefully.

Open Question Page
Ask Friends

यदि \(A=\{1,2\}\) है, तो \({1}\in\mathcal{P}(A)\) और \({1}\subseteq\mathcal{P}(A)\) में से कौन सा सही है?

If \(A=\{1,2\}\), which is correct between \({1}\in\mathcal{P}(A)\) and \({1}\subseteq\mathcal{P}(A)\)?

Explanation opens after your attempt
Correct Answer

A. केवल \({1}\in\mathcal{P}(A)\)

Explanation

Simple Explanation

({1}) (A) का subset है, इसलिए \({1}\in\mathcal{P}(A)\) सत्य है। पर \({1}\subseteq\mathcal{P}(A)\) के लिए \(1\in\mathcal{P}(A)\) चाहिए, जो गलत है। / ({1}) is a subset of (A), so \({1}\in\mathcal{P}(A)\) is true. But \({1}\subseteq\mathcal{P}(A)\) would require \(1\in\mathcal{P}(A)\), which is false.

Open Question Page
Ask Friends

\(यदि (U={x:x\in\mathbb{N},1\leq x\leq 15}) और (A={x:x\in U, x\) is divisible by \(3}) है, तो (|\mathcal{P}(A')|) कितना है\)?

\(If (U={x:x\in\mathbb{N},1\leq x\leq 15}) and (A={x:x\in U, x\) is divisible by \(3}), what is (|\mathcal{P}(A')|)\)?

Explanation opens after your attempt
Correct Answer

C. \(2^{10}\)

Explanation

Simple Explanation

(1) से (15) तक (3) से विभाज्य (5) संख्याएं हैं, इसलिए (|A'|=10)। अतः (|\mathcal{P}(A')|=2^{10})। / There are (5) numbers divisible by (3) from (1) to (15), so (|A'|=10). Hence (|\mathcal{P}(A')|=2^{10}).

Open Question Page
Ask Friends

\(यदि (U={x:x\in\mathbb{N},1\leq x\leq 20}) और (A={x:x\in U, x\) is prime}) है, तो (A') के non-empty subsets कितने हैं?

\(If (U={x:x\in\mathbb{N},1\leq x\leq 20}) and (A={x:x\in U, x\) is prime}), how many non-empty subsets does (A') have?

Explanation opens after your attempt
Correct Answer

B. (4095)

Explanation

Simple Explanation

(1) से (20) तक primes (8) हैं, इसलिए (|A'|=12)। Non-empty subsets \(2^{12}-1=4095\) हैं। / There are (8) primes from (1) to (20), so (|A'|=12). The non-empty subsets are \(2^{12}-1=4095\).

Open Question Page
Ask Friends

यदि \(A={x:x\in\mathbb{Z},-2\leq x\leq 3}\) है, तो (|\mathcal{P}(A)|) कितना है?

If \(A={x:x\in\mathbb{Z},-2\leq x\leq 3}\), what is (|\mathcal{P}(A)|)?

Explanation opens after your attempt
Correct Answer

C. (64)

Explanation

Simple Explanation

समुच्चय \(A=\{-2,-1,0,1,2,3\}\) में (6) तत्व हैं। इसलिए (|\mathcal{P}(A)|=26=64)। / The set \(A=\{-2,-1,0,1,2,3\}\) has (6) elements. Therefore (|\mathcal{P}(A)|=26=64).

Open Question Page
Ask Friends

\(यदि (U={1,2,3,4,5,6,7,8,9,10,11,12}) और (A={x:x\in U, x\) is odd\(}) है, तो (\mathcal{P}(A')) में (3) तत्वों वाले members कितने हैं\)?

\(If (U={1,2,3,4,5,6,7,8,9,10,11,12}) and (A={x:x\in U, x\) is odd\(}), how many (3)-element members are there in (\mathcal{P}(A'))\)?

Explanation opens after your attempt
Correct Answer

C. (20)

Explanation

Simple Explanation

(A') में even numbers (6) हैं, इसलिए (3)-element subsets की संख्या \(\binom{6}{3}=20\) है। परीक्षा में पहले (A') की size निकालें। / (A') contains (6) even numbers, so the number of (3)-element subsets is \(\binom{6}{3}=20\). In exams, first find the size of (A').

Open Question Page
Ask Friends

यदि (A) में (n) तत्व हैं और (\mathcal{P}(A)) में (31) proper subsets हैं, तो (n) कितना है?

If (A) has (n) elements and (\mathcal{P}(A)) has (31) proper subsets, what is (n)?

Explanation opens after your attempt
Correct Answer

B. (5)

Explanation

Simple Explanation

Proper subsets की संख्या \(2^n-1=31\) है। इसलिए \(2^n=32\) और (n=5)। / The number of proper subsets is \(2^n-1=31\). Therefore \(2^n=32\) and (n=5).

Open Question Page
Ask Friends

यदि \(A\subseteq U\), (|A|=m), और (|U|=2m) है, तो (|\mathcal{P}(A)|=|\mathcal{P}(A')|) कब होगा?

If \(A\subseteq U\), (|A|=m), and (|U|=2m), when will (|\mathcal{P}(A)|=|\mathcal{P}(A')|)?

Explanation opens after your attempt
Correct Answer

A. हमेशाAlways

Explanation

Simple Explanation

क्योंकि (|A'|=2m-m=m), इसलिए दोनों power sets की cardinality \(2^m\) होगी। परीक्षा में complement की size पहले निकालें। / Since (|A'|=2m-m=m), both power sets have cardinality \(2^m\). In exams, first find the size of the complement.

Open Question Page
Ask Friends

यदि \(A\subseteq U\), (|U|=18), और (|\mathcal{P}(A')|=1024) है, तो (|\mathcal{P}(A)|) कितना है?

If \(A\subseteq U\), (|U|=18), and (|\mathcal{P}(A')|=1024), what is (|\mathcal{P}(A)|)?

Explanation opens after your attempt
Correct Answer

B. \(2^8\)

Explanation

Simple Explanation

(|\mathcal{P}(A')|=1024=2^{10}), इसलिए (|A'|=10) और (|A|=8)। अतः (|\mathcal{P}(A)|=28)। / (|\mathcal{P}(A')|=1024=2^{10}), so (|A'|=10) and (|A|=8). Hence (|\mathcal{P}(A)|=28).

Open Question Page
Ask Friends

यदि \(A=\{1,2,3,4\}\) है, तो (\mathcal{P}(A)) में (A) को छोड़कर कितने members होंगे?

If \(A=\{1,2,3,4\}\), how many members are there in (\mathcal{P}(A)) excluding (A) itself?

Explanation opens after your attempt
Correct Answer

B. (15)

Explanation

Simple Explanation

(\mathcal{P}(A)) में \(2^4=16\) members हैं। (A) को हटाने पर (16-1=15) बचेंगे। / (\mathcal{P}(A)) has \(2^4=16\) members. Excluding (A) itself leaves (16-1=15).

Open Question Page
Ask Friends

यदि \(A=\{1,2,3,4,5,6\}\) है, तो (\mathcal{P}(A)) में ऐसे subsets कितने हैं जिनकी cardinality (2) से विभाज्य है?

If \(A=\{1,2,3,4,5,6\}\), how many subsets in (\mathcal{P}(A)) have cardinality divisible by (2)?

Explanation opens after your attempt
Correct Answer

B. (32)

Explanation

Simple Explanation

Cardinality (2) से विभाज्य होने का अर्थ even cardinality है। (6)-element set के even subsets \(2^{6-1}=32\) होते हैं। / Cardinality divisible by (2) means even cardinality. A (6)-element set has \(2^{6-1}=32\) even subsets.

Open Question Page
Ask Friends

यदि \(A=\{1,2,3,4,5\}\) है, तो (\mathcal{P}(A)) में ऐसे subsets कितने हैं जो ({1,2}) को contain करते हैं और (5) को नहीं रखते?

If \(A=\{1,2,3,4,5\}\), how many subsets in (\mathcal{P}(A)) contain ({1,2}) and do not contain (5)?

Explanation opens after your attempt
Correct Answer

B. (4)

Explanation

Simple Explanation

({1,2}) fixed है और (5) excluded है, इसलिए (3,4) optional हैं। संख्या \(2^2=4\) है। / ({1,2}) is fixed and (5) is excluded, so (3,4) are optional. The number is \(2^2=4\).

Open Question Page
Ask Friends

यदि \(A=\{a,b,c,d,e\}\) है, तो (\mathcal{P}(A)) में (a) या (b) में से कम से कम एक रखने वाले subsets कितने हैं?

If \(A=\{a,b,c,d,e\}\), how many subsets in (\mathcal{P}(A)) contain at least one of (a) or (b)?

Explanation opens after your attempt
Correct Answer

C. (24)

Explanation

Simple Explanation

कुल subsets \(2^5=32\) हैं और (a,b) दोनों न रखने वाले \(2^3=8\) हैं। इसलिए उत्तर (32-8=24) है। / Total subsets are \(2^5=32\), and subsets containing neither (a,b) are \(2^3=8\). Therefore the answer is (32-8=24).

Open Question Page
Ask Friends
Question 44/50 Expert Mathematics Sets Class 11 Level 11

यदि \(U=\{1,2,3,4,5,6,7,8\}\), \(A=\{1,2,3,4\}\), और \(B=\{3,4,5,6\}\) है, तो \(\mathcal{P}(A'\cap B')\) कितना है?

If \(U=\{1,2,3,4,5,6,7,8\}\), \(A=\{1,2,3,4\}\), and \(B=\{3,4,5,6\}\), what is \(\mathcal{P}(A'\cap B')\)?

Explanation opens after your attempt
Correct Answer

B. (4)

Explanation

Simple Explanation

(A'\cap B'=\(A\cup B\)') और \(A\cup B={1,2,3,4,5,6}\) है। complement में (2) तत्व हैं, इसलिए \(2^2=4\)। / (A'\cap B'=\(A\cup B\)') and \(A\cup B={1,2,3,4,5,6}\). The complement has (2) elements, so \(2^2=4\).

Open Question Page
Ask Friends
Question 45/50 Expert Mathematics Sets Class 11 Level 11

यदि \(U=\{1,2,3,4,5,6,7,8,9\}\), \(A=\{1,2,3,4,5\}\), और \(B=\{4,5,6,7\}\) है, तो \(\mathcal{P}(A'\cup B')\) कितना है?

If \(U=\{1,2,3,4,5,6,7,8,9\}\), \(A=\{1,2,3,4,5\}\), and \(B=\{4,5,6,7\}\), what is \(\mathcal{P}(A'\cup B')\)?

Explanation opens after your attempt
Correct Answer

D. (128)

Explanation

Simple Explanation

(A'\cup B'=\(A\cap B\)') और \(A\cap B={4,5}\) है। complement में (7) तत्व हैं, इसलिए \(2^7=128\)। / (A'\cup B'=\(A\cap B\)') and \(A\cap B={4,5}\). The complement has (7) elements, so \(2^7=128\).

Open Question Page
Ask Friends
Question 46/50 Expert Mathematics Sets Class 11 Level 11

यदि \(A=\{1,2,3,4,5,6\}\) है, तो \(\mathcal{P}(A)\) में (4) तत्वों वाले subsets कितने हैं जो ({1,2}) को contain करते हैं?

If \(A=\{1,2,3,4,5,6\}\), how many (4)-element subsets in \(\mathcal{P}(A)\) contain ({1,2})?

Explanation opens after your attempt
Correct Answer

B. (6)

Explanation

Simple Explanation

({1,2}) fixed है, इसलिए बाकी (2) तत्व ({3,4,5,6}) से चुनने हैं। संख्या \(\binom{4}{2}=6\) है। / ({1,2}) is fixed, so choose the remaining (2) elements from ({3,4,5,6}). The number is \(\binom{4}{2}=6\).

Open Question Page
Ask Friends
Question 47/50 Expert Mathematics Sets Class 11 Level 11

यदि \(|A|=5\) है, तो शक्ति समुच्चय \(\mathcal{P}(A)\) में से \(A\) और \(\varnothing\) दोनों को निकालने पर कितने सदस्य बचेगें?

If \(|A|=5\), how many elements of the power set \(\mathcal{P}(A)\) remain after excluding both \(A\) and \(\varnothing\)?

Explanation opens after your attempt
Correct Answer

B. 30

Explanation

Simple Explanation

यदि किसी समुच्चय के सदस्यों की संख्या \(|A|=n\) हो तो उसके शक्ति समुच्चय की कुल संख्या \(2^n\) होती है। यहाँ \(n=5\) है, इसलिए \(|\mathcal{P}(A)|=2^5=32\)। शक्ति समुच्चय में हमेशा \(A\) और \(\varnothing\) दोनों उपस्थित रहते हैं; इन्हें निकालने पर बचते हैं \(32-2=30\) सदस्य। सबसे नज़दीकी भ्रामक विकल्प \(31\) तब होता यदि केवल एक ही (या केवल शून्य) निकालना हो; \(32\) वह विकल्प है जिसमें कोई निकालना नहीं हुआ। परीक्षा सुझाव: शक्ति समुच्चय के आकार का सूत्र \(2^{|A|}\) याद रखें और हटाने से पहले कुल गिनती अवश्य लें। / For any set with \(|A|=n\), the power set has \(2^n\) elements. Here \(n=5\), so \(|\mathcal{P}(A)|=2^5=32\). The power set always contains both \(A\) and \(\varnothing\); removing them leaves \(32-2=30\) elements. The common distractor 31 would correspond to removing only one of them; 32 corresponds to removing none. Exam tip: first compute \(2^{|A|}\) then subtract the exact number of excluded subsets.

Open Question Page
Ask Friends
Question 48/50 Expert Mathematics Sets Class 11 Level 11

यदि \(A=\{1,2,3,4\}\) और \(B=\{3,4,5,6\}\) है, तो \(\mathcal{P}(A\cup B)|-|\mathcal{P}(A\cap B)\) कितना है?

If \(A=\{1,2,3,4\}\) and \(B=\{3,4,5,6\}\), what is \(\mathcal{P}(A\cup B)|-|\mathcal{P}(A\cap B)\)?

Explanation opens after your attempt
Correct Answer

C. (60)

Explanation

Simple Explanation

\(|A\cup B|=6\) और \(|A\cap B|=2\), इसलिए \(2^6-2^2=64-4=60\)। परीक्षा में पहले union और intersection की size निकालें। / \(|A\cup B|=6\) and \(|A\cap B|=2\), so \(2^6-2^2=64-4=60\). In exams, first find the sizes of union and intersection.

Open Question Page
Ask Friends
Question 49/50 Expert Mathematics Sets Class 11 Level 11

यदि \(A\subseteq U\), (|A|=4), और (|A'|=5) है, तो \(\mathcal{P}(U)\) कितना होगा?

If \(A\subseteq U\), (|A|=4), and (|A'|=5), what is \(\mathcal{P}(U)\)?

Explanation opens after your attempt
Correct Answer

B. (512)

Explanation

Simple Explanation

(|U|=|A|+|A'|=4+5=9), इसलिए (|\mathcal{P}(U)|=29=512)। परीक्षा में (A) और (A') मिलकर पूरा (U) बनाते हैं। / (|U|=|A|+|A'|=4+5=9), so (|\mathcal{P}(U)|=29=512). In exams, (A) and (A') together form the whole (U).

Open Question Page
Ask Friends
Question 50/50 Expert Mathematics Sets Class 11 Level 11

यदि (U) में (10) तत्व हैं, तो \(\mathcal {P}(U)\) में ऐसे members कितने हैं जो (U) के किसी निश्चित (4)-तत्वीय subset से disjoint हैं?

If (U) has (10) elements, how many members of \(\mathcal{P}(U)) are disjoint from a fixed (4)-element subset of (U)?

Explanation opens after your attempt
Correct Answer

C. (64)

Explanation

Simple Explanation

Fixed (4)-element subset से disjoint member केवल शेष (6) तत्वों से बनेगा। इसलिए संख्या \(2^6=64\) है। / A member disjoint from the fixed (4)-element subset can be formed only from the remaining (6) elements. Therefore the number is \(2^6=64\).

Open Question Page
Ask Friends
FAQs

Class 11 Computer Science Quiz FAQs

How many questions are in this quiz?

This level is designed for 50 active questions. Currently 50 questions are available for the selected class and difficulty.

Is there a timer in this quiz?

Yes, the timer uses 25 seconds per question for Expert difficulty and shows the total remaining time on the page.

Can I open each question separately?

Yes, every question has its own SEO-friendly page with answer, explanation and related practice links.