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Mathematics Assertion (A) & Reason (B) MCQ

Geometric Progression · ICSE STD 10 (ICSE - English Medium). 3 questions.

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Assertion (A) & Reason (B) MCQ

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3 questions · timed · auto-graded

Question 11 Mark
Assertion (A) : The sum of first 9 terms of the GP 3,6,12, $\ldots$ is 1533.
Reason (R) : The sum of first $n$ terms of a GP is given by $S _n=\frac{a\left(r^n-1\right)}{r-1}$.
Answer
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Question 21 Mark
Assertion (A) : If the 5th term of a GP is 2 , then the product of its first nine terms is 510 .
Reason (R) : The $n$th term of a GP is given by $T _n=a r^{n+1}$.
Answer
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Question 31 Mark
Assertion (A) : The sequence $2,6,18, \ldots$ is a GP.
Reason (R) : If the numbers $a_1, a_2, a_3, \ldots .$. are in GP, then ccommon ratio of the GP is $\frac{a_1}{a_2}$ or $\frac{a_2}{a_3}$
Answer
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Assertion (A) & Reason (B) MCQ - Mathematics STD 10 Questions - Vidyadip