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 101-110 of 600 questions.
How many ways are there to choose (2) badges from (18) different badges?
A. (153)
दो बैज चुनने के तरीके \(\binom{18}{2}=153\) हैं। चयन में क्रम नहीं गिना जाता। / The number of ways is \(\binom{18}{2}=153\). Order is not counted in selection.
Login to save your score, XP, coins and progress.
In how many ways can a duty team of (5) volunteers be selected from (10) volunteers?
B. (252)
टीम चुनना संयोजन है इसलिए \(\binom{10}{5}=252\) होगा। पद न दिए हों तो क्रम नहीं देखें। / Selecting a team is a combination, so \(\binom{10}{5}=252\). If posts are not assigned, do not consider order.
Login to save your score, XP, coins and progress.
How many ways can (3) chapters be selected from (13) different chapters for revision?
C. (286)
अध्यायों का केवल चयन है। इसलिए \(\binom{13}{3}=286\) सही है। / Only selection of chapters is involved. Hence \(\binom{13}{3}=286\) is correct.
Login to save your score, XP, coins and progress.
How many ways are there to choose (6) files from (9) different files?
D. (84)
\(\binom{9}{6}=\binom{9}{3}=84\) है। पूरक चयन से गणना आसान होती है। / \(\binom{9}{6}=\binom{9}{3}=84\). Complementary selection makes calculation easier.
Login to save your score, XP, coins and progress.
From (6) boys and (5) girls, in how many ways can (3) boys and (1) girl be selected?
A. (100)
तरीके \(\binom{6}{3}\binom{5}{1}=20\cdot5=100\) हैं। अलग वर्गों से चयन में गुणा करें। / The ways are \(\binom{6}{3}\binom{5}{1}=20\cdot5=100\). Multiply selections from different groups.
Login to save your score, XP, coins and progress.
From (8) red and (7) white flowers, in how many ways can (2) red and (2) white flowers be selected?
B. (588)
चयन \(\binom{8}{2}\binom{7}{2}=28\cdot21=588\) है। हर रंग के लिए अलग संयोजन लगाएं। / The selection is \(\binom{8}{2}\binom{7}{2}=28\cdot21=588\). Use a separate combination for each color.
Login to save your score, XP, coins and progress.
In how many ways can a team of (2) doctors and (1) nurse be formed from (7) doctors and (4) nurses?
C. (84)
तरीके \(\binom{7}{2}\binom{4}{1}=21\cdot4=84\) हैं। शर्तों को अलग-अलग गिनें। / The ways are \(\binom{7}{2}\binom{4}{1}=21\cdot4=84\). Count each condition separately.
Login to save your score, XP, coins and progress.
D. (200)
तरीके \(\binom{5}{2}\binom{6}{3}=10\cdot20=200\) हैं। अलग विषयों के चयन को गुणा करें। / The ways are \(\binom{5}{2}\binom{6}{3}=10\cdot20=200\). Multiply selections from different subjects.
Login to save your score, XP, coins and progress.
What is the maximum number of handshakes among (20) persons?
A. (190)
हर हाथ मिलाना (2) व्यक्तियों की एक जोड़ी है। इसलिए \(\binom{20}{2}=190\) होगा। / Each handshake is a pair of (2) persons. Therefore \(\binom{20}{2}=190\).
Login to save your score, XP, coins and progress.
B. (55)
हर मैच (2) टीमों की जोड़ी से बनता है। कुल मैच \(\binom{11}{2}=55\) होंगे। / Each match is formed by a pair of (2) teams. The total matches are \(\binom{11}{2}=55\).
Login to save your score, XP, coins and progress.
Use Google login or mobile OTP. Admin can block users and control login providers.