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 111-120 of 600 questions.
C. (364)
त्रिभुज के लिए (3) बिंदु चाहिए। इसलिए \(\binom{14}{3}=364\) है। / A triangle needs (3) points. Hence \(\binom{14}{3}=364\).
Login to save your score, XP, coins and progress.
How many straight lines can be formed from (12) points if no (3) points lie on the same line?
B. (66)
एक रेखा (2) बिंदुओं से बनती है। इसलिए \(\binom{12}{2}=66\) सही है। / A line is formed by (2) points. Hence \(\binom{12}{2}=66\) is correct.
Login to save your score, XP, coins and progress.
There are (10) points, no (3) of which are collinear. How many circles will be determined?
C. (120)
एक वृत्त (3) बिंदुओं से निर्धारित होता है। अतः \(\binom{10}{3}=120\) होगा। / A circle is determined by (3) points. Thus \(\binom{10}{3}=120\).
Login to save your score, XP, coins and progress.
In how many ways can (4) guests be called on stage from (8) guests if their order is not considered?
B. (70)
क्रम नहीं देखना है इसलिए \(\binom{8}{4}=70\) है। केवल बुलाना चयन है। / Order is not considered, so \(\binom{8}{4}=70\). Merely calling them is selection.
Login to save your score, XP, coins and progress.
How many ways are there to choose (4) cards from (16) cards?
A. (1820)
चार कार्ड चुनने के तरीके \(\binom{16}{4}=1820\) हैं। कार्डों की व्यवस्था नहीं पूछी गई है। / The ways to choose four cards are \(\binom{16}{4}=1820\). Arrangement of cards is not asked.
Login to save your score, XP, coins and progress.
What is the total number of ways to choose any number of stickers from (7) different stickers?
B. (128)
हर स्टिकर चुना या छोड़ा जा सकता है। इसलिए कुल तरीके \(2^7=128\) हैं। / Each sticker can be selected or left. Hence the total ways are \(2^7=128\).
Login to save your score, XP, coins and progress.
In how many ways can at least (1) coin be selected from (8) different coins?
C. (255)
कम से कम (1) चयन के तरीके \(2^8-1=255\) हैं। खाली चयन को घटाएं। / The ways for at least (1) selection are \(2^8-1=255\). Subtract the empty selection.
Login to save your score, XP, coins and progress.
In how many ways can at least (2) colors be selected from (6) colors?
B. (57)
कुल चयन \(2^6=64\) हैं। (0) और (1) चयन हटाने पर (64-1-6=57) तरीके बचते हैं। / Total selections are \(2^6=64\). Removing (0) and (1) selections leaves (64-1-6=57) ways.
Login to save your score, XP, coins and progress.
In how many ways can at most (2) options be selected from (5) options?
C. (16)
अधिकतम (2) का अर्थ (0), (1) या (2) चयन है। इसलिए \(\binom{5}{0}+\binom{5}{1}+\binom{5}{2}=16\) है। / At most (2) means selecting (0), (1), or (2). Hence \(\binom{5}{0}+\binom{5}{1}+\binom{5}{2}=16\).
Login to save your score, XP, coins and progress.
How many ways are there to choose exactly (4) sweets from (9) sweets?
D. (126)
ठीक (4) चुनने के तरीके \(\binom{9}{4}=126\) हैं। ठीक शब्द आने पर एक ही (r) मान लें। / The ways to choose exactly (4) are \(\binom{9}{4}=126\). When exactly is given, use only one (r) value.
Login to save your score, XP, coins and progress.
Use Google login or mobile OTP. Admin can block users and control login providers.