\( \sqrt{147} \) को सरल करने पर क्या मिलेगा?
What is obtained by simplifying \( \sqrt{147} \)?
#real numbers
#radicals
#class 9
A \(21\sqrt{7}\)
B \(7\sqrt{3}\)
C \(3\sqrt{7}\)
D \(49\sqrt{3}\)
Explanation opens after your attempt
Correct Answer
B. \(7\sqrt{3}\)
Step 1
Concept
Since \(147=49\times3\), \( \sqrt{147}=7\sqrt{3} \). Taking out the perfect square is the main step.
Step 2
Why this answer is correct
The correct answer is B. \(7\sqrt{3}\). Since \(147=49\times3\), \( \sqrt{147}=7\sqrt{3} \). Taking out the perfect square is the main step.
Step 3
Exam Tip
\(147=49\times3\) इसलिए \( \sqrt{147}=7\sqrt{3} \)। पूर्ण वर्ग को बाहर निकालना मुख्य कदम है।
Login to save your score, XP, coins and progress. Login
\( \sqrt{144}-\sqrt{25} \) का मान क्या है?
What is the value of \( \sqrt{144}-\sqrt{25} \)?
#real numbers
#square root subtraction
#class 9
A (17)
B (7)
C (12)
D (5)
Explanation opens after your attempt
Step 1
Concept
\( \sqrt{144}=12 \) and \( \sqrt{25}=5 \). Therefore the difference is (7).
Step 2
Why this answer is correct
The correct answer is B. (7). \( \sqrt{144}=12 \) and \( \sqrt{25}=5 \). Therefore the difference is (7).
Step 3
Exam Tip
\( \sqrt{144}=12 \) और \( \sqrt{25}=5 \) है। इसलिए अंतर (7) है।
Login to save your score, XP, coins and progress. Login
( \(\sqrt{15}\)2 ) का मान क्या है?
What is the value of ( \(\sqrt{15}\)2 )?
#real numbers
#square of square root
#class 9
A (15)
B (30)
C (225)
D \( \sqrt{30} \)
Explanation opens after your attempt
Step 1
Concept
The square of the square root of a positive number gives the same number. Therefore ( \(\sqrt{15}\)2 =15 ).
Step 2
Why this answer is correct
The correct answer is A. (15). The square of the square root of a positive number gives the same number. Therefore ( \(\sqrt{15}\)2 =15 ).
Step 3
Exam Tip
किसी धनात्मक संख्या के वर्गमूल का वर्ग वही संख्या देता है। इसलिए ( \(\sqrt{15}\)2 =15 )।
Login to save your score, XP, coins and progress. Login
( \(7-\sqrt{3}\) ) किस प्रकार की संख्या है?
What type of number is ( \(7-\sqrt{3}\) )?
#real numbers
#irrational difference
#class 9
A अपरिमेय वास्तविक संख्या / Irrational real number
B परिमेय संख्या / Rational number
C प्राकृतिक संख्या / Natural number
D शून्य / Zero
Explanation opens after your attempt
Correct Answer
A. अपरिमेय वास्तविक संख्या / Irrational real number
Step 1
Concept
Subtracting an irrational number from a rational number gives an irrational result. Thus \(7-\sqrt{3}\) is an irrational real number.
Step 2
Why this answer is correct
The correct answer is A. अपरिमेय वास्तविक संख्या / Irrational real number. Subtracting an irrational number from a rational number gives an irrational result. Thus \(7-\sqrt{3}\) is an irrational real number.
Step 3
Exam Tip
परिमेय संख्या से अपरिमेय संख्या घटाने पर परिणाम अपरिमेय होता है। इसलिए \(7-\sqrt{3}\) अपरिमेय वास्तविक संख्या है।
Login to save your score, XP, coins and progress. Login
\( \sqrt{\frac{121}{144}} \) किसके बराबर है?
What is \( \sqrt{\frac{121}{144}} \) equal to?
#real numbers
#square root fraction
#class 9
A \( \frac{11}{12} \)
B \( \frac{121}{12} \)
C \( \frac{12}{11} \)
D \( \frac{11}{144} \)
Explanation opens after your attempt
Correct Answer
A. \( \frac{11}{12} \)
Step 1
Concept
\( \sqrt{121}=11 \) and \( \sqrt{144}=12 \). Therefore the answer is \( \frac{11}{12} \).
Step 2
Why this answer is correct
The correct answer is A. \( \frac{11}{12} \). \( \sqrt{121}=11 \) and \( \sqrt{144}=12 \). Therefore the answer is \( \frac{11}{12} \).
Step 3
Exam Tip
\( \sqrt{121}=11 \) और \( \sqrt{144}=12 \) है। इसलिए उत्तर \( \frac{11}{12} \) है।
Login to save your score, XP, coins and progress. Login
\( \sqrt{1.44} \) का मान क्या है?
What is the value of \( \sqrt{1.44} \)?
#real numbers
#decimal square root
#class 9
A (0.12)
B (1.02)
C (1.2)
D (12)
Explanation opens after your attempt
Step 1
Concept
\(1.2^2=1.44\), so \( \sqrt{1.44}=1.2 \). Be careful with place value in decimal square roots.
Step 2
Why this answer is correct
The correct answer is C. (1.2). \(1.2^2=1.44\), so \( \sqrt{1.44}=1.2 \). Be careful with place value in decimal square roots.
Step 3
Exam Tip
\(1.2^2=1.44\) इसलिए \( \sqrt{1.44}=1.2 \)। दशमलव वर्गमूल में स्थान मान ध्यान रखें।
Login to save your score, XP, coins and progress. Login
\( \sqrt{75}-\sqrt{12} \) का सरल रूप क्या है?
What is the simplified form of \( \sqrt{75}-\sqrt{12} \)?
#real numbers
#surd subtraction
#class 9
A \(3\sqrt{3}\)
B \(7\sqrt{3}\)
C \( \sqrt{63} \)
D \(5\sqrt{3}\)
Explanation opens after your attempt
Correct Answer
A. \(3\sqrt{3}\)
Step 1
Concept
\( \sqrt{75}=5\sqrt{3} \) and \( \sqrt{12}=2\sqrt{3} \). The difference is \(3\sqrt{3}\).
Step 2
Why this answer is correct
The correct answer is A. \(3\sqrt{3}\). \( \sqrt{75}=5\sqrt{3} \) and \( \sqrt{12}=2\sqrt{3} \). The difference is \(3\sqrt{3}\).
Step 3
Exam Tip
\( \sqrt{75}=5\sqrt{3} \) और \( \sqrt{12}=2\sqrt{3} \) हैं। अंतर \(3\sqrt{3}\) है।
Login to save your score, XP, coins and progress. Login
\( \sqrt{72} \) को सरल करने पर क्या मिलेगा?
What is obtained by simplifying \( \sqrt{72} \)?
#real numbers
#surd simplification
#class 9
A \(12\sqrt{2}\)
B \(6\sqrt{2}\)
C \(8\sqrt{3}\)
D \(9\sqrt{2}\)
Explanation opens after your attempt
Correct Answer
B. \(6\sqrt{2}\)
Step 1
Concept
Since \(72=36\times2\), \( \sqrt{72}=6\sqrt{2} \). Take the perfect square outside the square root.
Step 2
Why this answer is correct
The correct answer is B. \(6\sqrt{2}\). Since \(72=36\times2\), \( \sqrt{72}=6\sqrt{2} \). Take the perfect square outside the square root.
Step 3
Exam Tip
\(72=36\times2\) इसलिए \( \sqrt{72}=6\sqrt{2} \)। पूर्ण वर्ग को वर्गमूल से बाहर निकालें।
Login to save your score, XP, coins and progress. Login
( \(5-\sqrt{2}\) ) किस प्रकार की संख्या है?
What type of number is ( \(5-\sqrt{2}\) )?
#real numbers
#irrational difference
#class 9
A अपरिमेय वास्तविक संख्या / Irrational real number
B परिमेय संख्या / Rational number
C पूर्ण संख्या / Whole number
D शून्य / Zero
Explanation opens after your attempt
Correct Answer
A. अपरिमेय वास्तविक संख्या / Irrational real number
Step 1
Concept
Subtracting an irrational number from a rational number gives an irrational result. Thus \(5-\sqrt{2}\) is an irrational real number.
Step 2
Why this answer is correct
The correct answer is A. अपरिमेय वास्तविक संख्या / Irrational real number. Subtracting an irrational number from a rational number gives an irrational result. Thus \(5-\sqrt{2}\) is an irrational real number.
Step 3
Exam Tip
परिमेय संख्या में अपरिमेय संख्या घटाने पर परिणाम अपरिमेय होता है। इसलिए \(5-\sqrt{2}\) अपरिमेय वास्तविक संख्या है।
Login to save your score, XP, coins and progress. Login
\( \sqrt{\frac{49}{64}} \) का मान क्या है?
What is the value of \( \sqrt{\frac{49}{64}} \)?
#real numbers
#fraction square root
#class 9
A \( \frac{7}{8} \)
B \( \frac{49}{8} \)
C \( \frac{8}{7} \)
D \( \frac{7}{64} \)
Explanation opens after your attempt
Correct Answer
A. \( \frac{7}{8} \)
Step 1
Concept
Take square roots of numerator and denominator separately. \( \sqrt{\frac{49}{64}}=\frac{7}{8} \).
Step 2
Why this answer is correct
The correct answer is A. \( \frac{7}{8} \). Take square roots of numerator and denominator separately. \( \sqrt{\frac{49}{64}}=\frac{7}{8} \).
Step 3
Exam Tip
अंश और हर के अलग-अलग वर्गमूल लें। \( \sqrt{\frac{49}{64}}=\frac{7}{8} \)।
Login to save your score, XP, coins and progress. Login
\( \sqrt{0.04} \) का मान क्या है?
What is the value of \( \sqrt{0.04} \)?
#real numbers
#decimal square root
#class 9
A (0.02)
B (0.2)
C (2)
D (0.4)
Explanation opens after your attempt
Step 1
Concept
\(0.2^2=0.04\), so \( \sqrt{0.04}=0.2 \). Be careful with place value in decimal square roots.
Step 2
Why this answer is correct
The correct answer is B. (0.2). \(0.2^2=0.04\), so \( \sqrt{0.04}=0.2 \). Be careful with place value in decimal square roots.
Step 3
Exam Tip
\(0.2^2=0.04\) इसलिए \( \sqrt{0.04}=0.2 \)। दशमलव के वर्गमूल में स्थान मान ध्यान रखें।
Login to save your score, XP, coins and progress. Login
(2.75) किस भिन्न के बराबर है?
Which fraction is equal to (2.75)?
#real numbers
#decimal conversion
#class 9
A \( \frac{11}{4} \)
B \( \frac{7}{25} \)
C \( \frac{25}{11} \)
D \( \frac{4}{11} \)
Explanation opens after your attempt
Correct Answer
A. \( \frac{11}{4} \)
Step 1
Concept
\(2.75=\frac{275}{100}=\frac{11}{4} \). Convert the decimal into a fraction and simplify.
Step 2
Why this answer is correct
The correct answer is A. \( \frac{11}{4} \). \(2.75=\frac{275}{100}=\frac{11}{4} \). Convert the decimal into a fraction and simplify.
Step 3
Exam Tip
\(2.75=\frac{275}{100}=\frac{11}{4} \)। दशमलव को भिन्न में बदलकर सरल करें।
Login to save your score, XP, coins and progress. Login
\( \sqrt{5} \) का वर्ग क्या है?
What is the square of \( \sqrt{5} \)?
#real numbers
#square of square root
#class 9
A \( \sqrt{25} \)
B (10)
C (5)
D (25)
Explanation opens after your attempt
Step 1
Concept
( \(\sqrt{5}\)2 =5 ). The square of the square root of a positive number gives the same number.
Step 2
Why this answer is correct
The correct answer is C. (5). ( \(\sqrt{5}\)2 =5 ). The square of the square root of a positive number gives the same number.
Step 3
Exam Tip
( \(\sqrt{5}\)2 =5 ) होता है। किसी धनात्मक संख्या के वर्गमूल का वर्ग वही संख्या देता है।
Login to save your score, XP, coins and progress. Login
\( \sqrt{48}\div\sqrt{3} \) का मान क्या है?
What is the value of \( \sqrt{48}\div\sqrt{3} \)?
#real numbers
#surd division
#class 9
A (2)
B (4)
C (8)
D (16)
Explanation opens after your attempt
Step 1
Concept
\( \frac{\sqrt{48}}{\sqrt{3}}=\sqrt{16}=4 \). In division of square roots, divide the numbers inside.
Step 2
Why this answer is correct
The correct answer is B. (4). \( \frac{\sqrt{48}}{\sqrt{3}}=\sqrt{16}=4 \). In division of square roots, divide the numbers inside.
Step 3
Exam Tip
\( \frac{\sqrt{48}}{\sqrt{3}}=\sqrt{16}=4 \)। वर्गमूल के भाग में अंदर की संख्याओं का भाग लें।
Login to save your score, XP, coins and progress. Login
\( \sqrt{45} \) को सरल करने पर क्या मिलेगा?
What is obtained by simplifying \( \sqrt{45} \)?
#real numbers
#surd simplification
#class 9
A \(3\sqrt{5}\)
B \(5\sqrt{3}\)
C \(9\sqrt{5}\)
D (15)
Explanation opens after your attempt
Correct Answer
A. \(3\sqrt{5}\)
Step 1
Concept
Since \(45=9\times5\), \( \sqrt{45}=3\sqrt{5} \). Take the perfect square outside the square root.
Step 2
Why this answer is correct
The correct answer is A. \(3\sqrt{5}\). Since \(45=9\times5\), \( \sqrt{45}=3\sqrt{5} \). Take the perfect square outside the square root.
Step 3
Exam Tip
\(45=9\times5\) इसलिए \( \sqrt{45}=3\sqrt{5} \)। वर्गमूल में पूर्ण वर्ग को बाहर निकालें।
Login to save your score, XP, coins and progress. Login
कौन सी संख्या परिमेय और वास्तविक दोनों है?
Which number is both rational and real?
#real numbers
#rational
#class 9
A \( \sqrt{15} \)
B \( \frac{-11}{6} \)
C \( \sqrt{21} \)
D असमाप्त अनावर्ती दशमलव / Non-terminating non-repeating decimal
Explanation opens after your attempt
Correct Answer
B. \( \frac{-11}{6} \)
Step 1
Concept
\( \frac{-11}{6} \) is a ratio of two integers with non-zero denominator. So it is a rational real number.
Step 2
Why this answer is correct
The correct answer is B. \( \frac{-11}{6} \). \( \frac{-11}{6} \) is a ratio of two integers with non-zero denominator. So it is a rational real number.
Step 3
Exam Tip
\( \frac{-11}{6} \) दो पूर्णांकों का अनुपात है और हर शून्य नहीं है। इसलिए यह परिमेय वास्तविक संख्या है।
Login to save your score, XP, coins and progress. Login
वास्तविक संख्या रेखा पर हर बिंदु किसे दर्शाता है?
Every point on the real number line represents what?
#real numbers
#number line
#class 9
A एक वास्तविक संख्या / A real number
B केवल प्राकृतिक संख्या / Only natural number
C केवल पूर्णांक / Only integer
D अपरिभाषित संख्या / Undefined number
Explanation opens after your attempt
Correct Answer
A. एक वास्तविक संख्या / A real number
Step 1
Concept
Each point on the real number line represents a real number. Understanding the number line helps in comparison.
Step 2
Why this answer is correct
The correct answer is A. एक वास्तविक संख्या / A real number. Each point on the real number line represents a real number. Understanding the number line helps in comparison.
Step 3
Exam Tip
वास्तविक संख्या रेखा का प्रत्येक बिंदु एक वास्तविक संख्या को दर्शाता है। संख्या रेखा समझना तुलना में मदद करता है।
Login to save your score, XP, coins and progress. Login
वास्तविक संख्या रेखा पर \( \sqrt{0} \) कहाँ स्थित है?
Where is \( \sqrt{0} \) located on the real number line?
#real numbers
#class 9
#zero square root
A (0) पर / At (0)
B (1) पर / At (1)
C ( -1 ) पर / At ( -1 )
D (2) पर / At (2)
Explanation opens after your attempt
Correct Answer
A. (0) पर / At (0)
Step 1
Concept
\( \sqrt{0}=0 \). Therefore it is located at the origin on the number line.
Step 2
Why this answer is correct
The correct answer is A. (0) पर / At (0). \( \sqrt{0}=0 \). Therefore it is located at the origin on the number line.
Step 3
Exam Tip
\( \sqrt{0}=0 \) होता है। इसलिए यह संख्या रेखा पर मूल बिंदु पर स्थित है।
Login to save your score, XP, coins and progress. Login
\(3+\sqrt{2}\) किस प्रकार की संख्या है?
What type of number is \(3+\sqrt{2}\)?
#real numbers
#class 9
#irrational sum
A परिमेय संख्या / Rational number
B अपरिमेय वास्तविक संख्या / Irrational real number
C पूर्णांक / Integer
D पूर्ण संख्या / Whole number
Explanation opens after your attempt
Correct Answer
B. अपरिमेय वास्तविक संख्या / Irrational real number
Step 1
Concept
Adding the irrational \( \sqrt{2} \) to the rational number (3) generally gives an irrational number. It is also real.
Step 2
Why this answer is correct
The correct answer is B. अपरिमेय वास्तविक संख्या / Irrational real number. Adding the irrational \( \sqrt{2} \) to the rational number (3) generally gives an irrational number. It is also real.
Step 3
Exam Tip
परिमेय संख्या (3) में अपरिमेय \( \sqrt{2} \) जोड़ने पर सामान्यतः अपरिमेय संख्या मिलती है। यह वास्तविक संख्या भी है।
Login to save your score, XP, coins and progress. Login
\( \sqrt{5} \) और \( \sqrt{6} \) में कौन बड़ी है?
Which is greater between \( \sqrt{5} \) and \( \sqrt{6} \)?
#real numbers
#class 9
#square root comparison
A \( \sqrt{5} \)
B \( \sqrt{6} \)
C दोनों बराबर / Both are equal
D दोनों वास्तविक नहीं / Both are not real
Explanation opens after your attempt
Correct Answer
B. \( \sqrt{6} \)
Step 1
Concept
For positive numbers, the square root of the greater number is also greater. Since (6>5), \( \sqrt{6}>\sqrt{5} \).
Step 2
Why this answer is correct
The correct answer is B. \( \sqrt{6} \). For positive numbers, the square root of the greater number is also greater. Since (6>5), \( \sqrt{6}>\sqrt{5} \).
Step 3
Exam Tip
धनात्मक संख्याओं में बड़ी संख्या का वर्गमूल भी बड़ा होता है। (6>5) इसलिए \( \sqrt{6}>\sqrt{5} \)।
Login to save your score, XP, coins and progress. Login
किस विकल्प में एक परिमेय और एक अपरिमेय वास्तविक संख्या है?
Which option has one rational and one irrational real number?
#real numbers
#class 9
#rational irrational
A (5) और \( \sqrt{2} \) / (5) and \( \sqrt{2} \)
B (3) और (4) / (3) and (4)
C \( \sqrt{5} \) और \( \sqrt{7} \) / \( \sqrt{5} \) and \( \sqrt{7} \)
D \( \frac{1}{2} \) और (0.25) / \( \frac{1}{2} \) and (0.25)
Explanation opens after your attempt
Correct Answer
A. (5) और \( \sqrt{2} \) / (5) and \( \sqrt{2} \)
Step 1
Concept
(5) is rational and \( \sqrt{2} \) is irrational. Both lie on the real number line.
Step 2
Why this answer is correct
The correct answer is A. (5) और \( \sqrt{2} \) / (5) and \( \sqrt{2} \). (5) is rational and \( \sqrt{2} \) is irrational. Both lie on the real number line.
Step 3
Exam Tip
(5) परिमेय है और \( \sqrt{2} \) अपरिमेय है। दोनों वास्तविक संख्या रेखा पर स्थित हैं।
Login to save your score, XP, coins and progress. Login
\( \sqrt{12} \) का सरल रूप क्या है?
What is the simplified form of \( \sqrt{12} \)?
#real numbers
#class 9
#surd simplification
A \(6\sqrt{2}\)
B \(2\sqrt{3}\)
C \(3\sqrt{2}\)
D \(4\sqrt{3}\)
Explanation opens after your attempt
Correct Answer
B. \(2\sqrt{3}\)
Step 1
Concept
Since \(12=4\times3\), \( \sqrt{12}=2\sqrt{3} \). Take the perfect-square factor outside the square root.
Step 2
Why this answer is correct
The correct answer is B. \(2\sqrt{3}\). Since \(12=4\times3\), \( \sqrt{12}=2\sqrt{3} \). Take the perfect-square factor outside the square root.
Step 3
Exam Tip
\(12=4\times3\) इसलिए \( \sqrt{12}=2\sqrt{3} \)। पूर्ण वर्ग गुणनखंड को वर्गमूल से बाहर निकालें।
Login to save your score, XP, coins and progress. Login
\( \sqrt{121} \) का मान क्या है?
What is the value of \( \sqrt{121} \)?
#real numbers
#class 9
#square root
A (10)
B (11)
C (12)
D (121)
Explanation opens after your attempt
Step 1
Concept
Since \(11^2=121\), \( \sqrt{121}=11 \). Remembering perfect squares is useful.
Step 2
Why this answer is correct
The correct answer is B. (11). Since \(11^2=121\), \( \sqrt{121}=11 \). Remembering perfect squares is useful.
Step 3
Exam Tip
\(11^2=121\) इसलिए \( \sqrt{121}=11 \)। पूर्ण वर्गों की सूची याद रखना उपयोगी है।
Login to save your score, XP, coins and progress. Login
कौन सा विकल्प सही क्रम दिखाता है?
Which option shows the correct order?
#real numbers
#class 9
#ordering
A ( -3<-1<2 )
B (2<-1<-3)
C ( -1<-3<2 )
D (2<-3<-1)
Explanation opens after your attempt
Correct Answer
A. ( -3<-1<2 )
Step 1
Concept
On the number line, the left number is smaller and the right number is greater. Therefore ( -3<-1<2 ) is correct.
Step 2
Why this answer is correct
The correct answer is A. ( -3<-1<2 ). On the number line, the left number is smaller and the right number is greater. Therefore ( -3<-1<2 ) is correct.
Step 3
Exam Tip
संख्या रेखा पर बाईं संख्या छोटी और दाईं संख्या बड़ी होती है। इसलिए ( -3<-1<2 ) सही है।
Login to save your score, XP, coins and progress. Login
कौन सी वास्तविक संख्या न धनात्मक है न ऋणात्मक?
Which real number is neither positive nor negative?
#real numbers
#class 9
#zero
A (0)
B (1)
C ( -1 )
D \( \frac{1}{2} \)
Explanation opens after your attempt
Step 1
Concept
(0) is neither positive nor negative. Keep (0) separate in number classification.
Step 2
Why this answer is correct
The correct answer is A. (0). (0) is neither positive nor negative. Keep (0) separate in number classification.
Step 3
Exam Tip
(0) न धनात्मक होता है न ऋणात्मक। संख्या वर्गीकरण में (0) को अलग रखें।
Login to save your score, XP, coins and progress. Login
\( \frac{4}{7} \) का गुणात्मक प्रतिलोम क्या है?
What is the multiplicative inverse of \( \frac{4}{7} \)?
#real numbers
#class 9
#multiplicative inverse
A \( \frac{7}{4} \)
B \( \frac{-4}{7} \)
C \( \frac{4}{-7} \)
D \( \frac{11}{7} \)
Explanation opens after your attempt
Correct Answer
A. \( \frac{7}{4} \)
Step 1
Concept
In the multiplicative inverse, numerator and denominator are interchanged. \( \frac{4}{7}\times\frac{7}{4}=1 \).
Step 2
Why this answer is correct
The correct answer is A. \( \frac{7}{4} \). In the multiplicative inverse, numerator and denominator are interchanged. \( \frac{4}{7}\times\frac{7}{4}=1 \).
Step 3
Exam Tip
गुणात्मक प्रतिलोम में अंश और हर बदल जाते हैं। \( \frac{4}{7}\times\frac{7}{4}=1 \)।
Login to save your score, XP, coins and progress. Login
( -9 ) का योज्य प्रतिलोम क्या है?
What is the additive inverse of ( -9 )?
#real numbers
#class 9
#additive inverse
A ( -9 )
B (0)
C \( \frac{1}{9} \)
D (9)
Explanation opens after your attempt
Step 1
Concept
The additive inverse gives (0) when added. Since ( -9+9=0 ), the answer is (9).
Step 2
Why this answer is correct
The correct answer is D. (9). The additive inverse gives (0) when added. Since ( -9+9=0 ), the answer is (9).
Step 3
Exam Tip
योज्य प्रतिलोम जोड़ने पर (0) देता है। ( -9+9=0 ) इसलिए उत्तर (9) है।
Login to save your score, XP, coins and progress. Login
वास्तविक संख्याओं में गुणन का तत्समक अवयव कौन सा है?
What is the multiplicative identity in real numbers?
#real numbers
#class 9
#multiplicative identity
A (0)
B (1)
C ( -1 )
D (10)
Explanation opens after your attempt
Step 1
Concept
Multiplying any real number by (1) gives the same number. Hence (1) is the multiplicative identity.
Step 2
Why this answer is correct
The correct answer is B. (1). Multiplying any real number by (1) gives the same number. Hence (1) is the multiplicative identity.
Step 3
Exam Tip
किसी भी वास्तविक संख्या को (1) से गुणा करने पर वही संख्या मिलती है। इसलिए (1) गुणन का तत्समक अवयव है।
Login to save your score, XP, coins and progress. Login
वास्तविक संख्याओं में योग का तत्समक अवयव कौन सा है?
What is the additive identity in real numbers?
#real numbers
#class 9
#additive identity
A (1)
B ( -1 )
C (0)
D (2)
Explanation opens after your attempt
Step 1
Concept
Adding (0) to any real number gives the same number. Hence (0) is the additive identity.
Step 2
Why this answer is correct
The correct answer is C. (0). Adding (0) to any real number gives the same number. Hence (0) is the additive identity.
Step 3
Exam Tip
किसी भी वास्तविक संख्या में (0) जोड़ने पर वही संख्या मिलती है। इसलिए (0) योग का तत्समक अवयव है।
Login to save your score, XP, coins and progress. Login
\( \frac{3}{2} \) और \( \sqrt{2} \) में कौन बड़ी है?
Which is greater between \( \frac{3}{2} \) and \( \sqrt{2} \)?
#real numbers
#class 9
#ordering
A \( \sqrt{2} \)
B \( \frac{3}{2} \)
C दोनों बराबर / Both are equal
D निर्धारित नहीं / Cannot be determined
Explanation opens after your attempt
Correct Answer
B. \( \frac{3}{2} \)
Step 1
Concept
\( \frac{3}{2}=1.5 \) and \( \sqrt{2}\approx1.414 \). Therefore \( \frac{3}{2} \) is greater.
Step 2
Why this answer is correct
The correct answer is B. \( \frac{3}{2} \). \( \frac{3}{2}=1.5 \) and \( \sqrt{2}\approx1.414 \). Therefore \( \frac{3}{2} \) is greater.
Step 3
Exam Tip
\( \frac{3}{2}=1.5 \) और \( \sqrt{2}\approx1.414 \) है। इसलिए \( \frac{3}{2} \) बड़ी है।
Login to save your score, XP, coins and progress. Login