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 561-570 of 600 questions.
If \(a_n=8n-5\), which term is equal to (155)?
C. (n=20)
(8n-5=155) से (n=20) मिलता है। परीक्षा में पद संख्या के लिए सूत्र को दिए मान के बराबर रखें। / From (8n-5=155), we get (n=20). In exams, equate the formula to the given value to find the term number.
Login to save your score, XP, coins and progress.
In the sequence \(4,15,26,37,\ldots\), which term is (125)?
C. बारहवाँ पद(12)th term
इसका नियम \(a_n=11n-7\) है और (11n-7=125) से (n=12) है। परीक्षा में दिए पद को सामान्य पद के बराबर रखें। / Its rule is \(a_n=11n-7\), and (11n-7=125) gives (n=12). In exams, equate the given term to the general term.
Login to save your score, XP, coins and progress.
Which general term is correct for the sequence \(3,8,17,32,\ldots\)?
A. \(a_n=2^n+n^2\)
\(2^n+n^2\) से (3,8,17,32) मिलते हैं। परीक्षा में घात और वर्ग वाले संयुक्त नियम जाँचें। / \(2^n+n^2\) gives (3,8,17,32). In exams, check combined power-and-square rules.
Login to save your score, XP, coins and progress.
If \(a_n=3^n+n^2-1\), what is the value of \(a_3\)?
B. (35)
\(a_3=27+9-1=35\) है। परीक्षा में घात, वर्ग और स्थिर घटाव तीनों देखें। / \(a_3=27+9-1=35\). In exams, check the power, square, and constant subtraction.
Login to save your score, XP, coins and progress.
What is the general term of the sequence \(3,12,35,96,\ldots\)?
A. \(a_n=3^n+n^2-1\)
\(3^n+n^2-1\) से (3,12,35,96) मिलते हैं। परीक्षा में तेज वृद्धि में घात वाला नियम जाँचें। / \(3^n+n^2-1\) gives (3,12,35,96). In exams, check a power rule in rapid growth.
Login to save your score, XP, coins and progress.
If \(a_n=7\cdot2^{n-1}+4\), what is the value of \(a_5\)?
B. (116)
\(a_5=7\cdot2^4+4=116\) है। परीक्षा में (n-1) वाले घातांक को ध्यान से लगाएँ। / \(a_5=7\cdot2^4+4=116\). In exams, apply the exponent (n-1) carefully.
Login to save your score, XP, coins and progress.
Which explicit rule is correct for the sequence \(11,18,32,60,\ldots\)?
A. \(a_n=7\cdot2^{n-1}+4\)
\(7\cdot2^{n-1}+4\) से दिए पद मिलते हैं। परीक्षा में गुणोत्तर रूप में स्थिर जोड़ भी जाँचें। / \(7\cdot2^{n-1}+4\) gives the given terms. In exams, also check constant addition in geometric forms.
Login to save your score, XP, coins and progress.
If \(a_n=4n^2+5n-6\), what is the value of \(a_3+a_5\)?
C. (164)
\(a_3=45\) और \(a_5=119\), इसलिए योग (164) है। परीक्षा में योग से पहले दोनों पद निकालें। / \(a_3=45\) and \(a_5=119\), so the sum is (164). In exams, find both terms before adding.
Login to save your score, XP, coins and progress.
What is the general term of the sequence \(3,20,45,78,\ldots\)?
A. \(a_n=4n^2+5n-6\)
\(4n^2+5n-6\) से (3,20,45,78) मिलते हैं। परीक्षा में दूसरे अंतर समान हों तो वर्गीय नियम चुनें। / \(4n^2+5n-6\) gives (3,20,45,78). In exams, choose a quadratic rule when second differences are constant.
Login to save your score, XP, coins and progress.
If \(a_n=n^3+3n^2-2\), what is the value of \(a_4\)?
D. (110)
\(a_4=64+48-2=110\) है। परीक्षा में घन और वर्ग दोनों अलग निकालें। / \(a_4=64+48-2=110\). In exams, calculate the cube and square separately.
Login to save your score, XP, coins and progress.
Use Google login or mobile OTP. Admin can block users and control login providers.