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 121-130 of 600 questions.
Which sequence is a sequence of cube numbers?
C. (1,8,27,64)
(1,8,27,64) क्रमशः \(1^3,2^3,3^3,4^3\) हैं। घन संख्याओं को पहचानना आसान पैटर्न है। / (1,8,27,64) are \(1^3,2^3,3^3,4^3\). Cube numbers form a recognizable pattern.
Login to save your score, XP, coins and progress.
If \(a_n=3n+2\), what will \(a_4\) be?
A. (14)
(n=4) रखने पर (a_4=3(4)+2=14) है। पहले गुणा करें, फिर जोड़ें। / Putting (n=4), (a_4=3(4)+2=14). Multiply first, then add.
Login to save your score, XP, coins and progress.
If \(a_n=2n^2\), what is the value of \(a_3\)?
B. (18)
(n=3) रखने पर (a_3=2\(3^2\)=18) है। वर्ग को गुणा से पहले निकालें। / Putting (n=3), (a_3=2\(3^2\)=18). Square before multiplying.
Login to save your score, XP, coins and progress.
If \(a_n=12-n\), what will \(a_5\) be?
C. (7)
(n=5) रखने पर \(a_5=12-5=7\) है। घटाव में क्रम का ध्यान रखें। / Putting (n=5), \(a_5=12-5=7\). Be careful with the order in subtraction.
Login to save your score, XP, coins and progress.
If \(a_n=5n-2\), what is the first term \(a_1\)?
D. (3)
(n=1) रखने पर (a_1=5(1)-2=3) है। पहला पद निकालने के लिए (n=1) रखें। / Putting (n=1), (a_1=5(1)-2=3). Use (n=1) to find the first term.
Login to save your score, XP, coins and progress.
What are the first four terms formed by \(a_n=4n-1\)?
A. (3,7,11,15)
(n=1,2,3,4) रखने पर (3,7,11,15) मिलते हैं। पहले चार पदों के लिए (n=1) से शुरू करें। / Putting (n=1,2,3,4) gives (3,7,11,15). Start with (n=1) for the first four terms.
Login to save your score, XP, coins and progress.
What are the first three terms formed by \(a_n=n^2-1\)?
B. (0,3,8)
(n=1,2,3) रखने पर (0,3,8) मिलते हैं। हर बार (n) का वर्ग लेकर (1) घटाएँ। / Putting (n=1,2,3) gives (0,3,8). Square (n) each time and subtract (1).
Login to save your score, XP, coins and progress.
What are the first four terms formed by \(a_n=2^n\)?
C. (2,4,8,16)
(n=1,2,3,4) रखने पर (2,4,8,16) मिलते हैं। घात वाले नियम में (n) घात का स्थान है। / Putting (n=1,2,3,4) gives (2,4,8,16). In an exponent rule, (n) is the power position.
Login to save your score, XP, coins and progress.
What is the (6)th term of \(8,12,16,20,\ldots\)?
D. (28)
हर बार (4) बढ़ता है। (8,12,16,20,24,28) में (6)वाँ पद (28) है। / Each term increases by (4). In (8,12,16,20,24,28), the (6)th term is (28).
Login to save your score, XP, coins and progress.
What is the (6)th term of \(90,84,78,72,\ldots\)?
A. (60)
हर बार (6) घटता है। (90,84,78,72,66,60) में (6)वाँ पद (60) है। / Each term decreases by (6). In (90,84,78,72,66,60), the (6)th term is (60).
Login to save your score, XP, coins and progress.
Use Google login or mobile OTP. Admin can block users and control login providers.