Practice focused topic-wise MCQs with answers and explanations for quick revision and exam preparation.
Difficulty select karke sirf is topic ke focused MCQs practice karein. Score, timer aur explanations student-friendly flow me milenge.
Showing 211-220 of 600 questions.
A. ({6,7,8})
\(A^c-B^c=A^c\cap B\) होता है। \(A^c={6,7,8,9,10}\), इसलिए (B) के साथ साझा भाग ({6,7,8}) है। / \(A^c-B^c=A^c\cap B\). Since \(A^c={6,7,8,9,10}\), the common part with (B) is ({6,7,8}).
Login to save your score, XP, coins and progress.
If \(U=\{1,2,3,4,5,6,7,8,9\}\), \(A=\{2,3,5,7\}\), and \(B=\{1,2,3,4,5\}\), what is ((B-A)^c)?
A. ({2,3,5,6,7,8,9})
पहले (B-A={1,4}) है। (U) से इसे हटाने पर ((B-A)^c={2,3,5,6,7,8,9}) मिलता है। / First (B-A={1,4}). Removing it from (U) gives ((B-A)^c={2,3,5,6,7,8,9}).
Login to save your score, XP, coins and progress.
\(If (U={1,2,3,\ldots,40}) and (A={x:x\) is divisible by 4 or \(5}), what is (n(A^c))\)?
A. (24)
(4) के (10) और (5) के (8) गुणज हैं, साझा (20) के (2) गुणज हैं। इसलिए (n(A)=10+8-2=16) और (n\(A^c\)=24)। / There are (10) multiples of (4) and (8) multiples of (5), with (2) common multiples of (20). Thus (n(A)=10+8-2=16), so (n\(A^c\)=24).
Login to save your score, XP, coins and progress.
\(If (U={1,2,3,\ldots,60}) and (A={x:x\) is divisible by \(6}), what is (n(A^c))\)?
A. (50)
(1) से (60) तक (6) के (10) गुणज हैं। इसलिए पूरक में (60-10=50) तत्व होंगे। / There are (10) multiples of (6) from (1) to (60). Therefore the complement has (60-10=50) elements.
Login to save your score, XP, coins and progress.
\(If (U={1,2,3,\ldots,12}) and (A={x:x\in U\) and \(x^2-7x+12=0}), what is (A^c)\)?
A. ({1,2,5,6,7,8,9,10,11,12})
\(x^2-7x+12=0\) से (x=3,4) मिलते हैं। (U) से (3) और (4) हटाने पर \(A^c\) मिलता है। / From \(x^2-7x+12=0\), (x=3,4). Removing (3) and (4) from (U) gives \(A^c\).
Login to save your score, XP, coins and progress.
If \(U={x:x\in\mathbb{Z},-6\le x\le 6}\) and \(A={x:x^2=16}\), what is (n\(A^c\))?
A. (11)
(U) में (13) पूर्णांक हैं और \(A=\{-4,4\}\) है। इसलिए (n\(A^c\)=13-2=11) होगा। / There are (13) integers in (U), and \(A=\{-4,4\}\). Hence (n\(A^c\)=13-2=11).
Login to save your score, XP, coins and progress.
A. (35)
चाय या कॉफी पसंद करने वाले (85+70-40=115) हैं। इसलिए पूरक में (150-115=35) लोग होंगे। / People who like tea or coffee are (85+70-40=115). Therefore the complement has (150-115=35) people.
Login to save your score, XP, coins and progress.
If (n(U)=96) and (n\(A^c\)=\frac{1}{3}n(U)), what is (n(A))?
A. (64)
(n\(A^c\)=\frac{1}{3}\times 96=32) है। इसलिए (n(A)=96-32=64) होगा। / (n\(A^c\)=\frac{1}{3}\times 96=32). Therefore (n(A)=96-32=64).
Login to save your score, XP, coins and progress.
\(If (U={1,2,3,\ldots,36}) and (A={x:x\) is a perfect square\(}), what is (n(A^c))\)?
A. (30)
(1) से (36) तक पूर्ण वर्ग (1,4,9,16,25,36) हैं। इसलिए (n\(A^c\)=36-6=30) होगा। / The perfect squares from (1) to (36) are (1,4,9,16,25,36). Hence (n\(A^c\)=36-6=30).
Login to save your score, XP, coins and progress.
\(If (U={1,2,3,\ldots,20}) and (A={x:x\) is divisible by \(4}), what is (A^c\cap{x:x\) is even})?
A. ({2,6,10,14,18})
यह सम संख्याओं में से (4) से विभाज्य संख्याएं हटाने जैसा है। इसलिए उत्तर (2,6,10,14,18) है। / This is like removing the multiples of (4) from the even numbers. Therefore the answer is (2,6,10,14,18).
Login to save your score, XP, coins and progress.
Use Google login or mobile OTP. Admin can block users and control login providers.