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If the prime factorisation of $2520$ is $2^3 \times 3^a \times b \times 7$, then the value of $a + 2b$ is:
- (a)$12$
- (b)$9$
- (c)$10$
- (d)$7$
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(A) $12$
If the prime factorisation of 2520 is 23 × 3a × b × 7 , then the value of a + 2b is:
CBSE Class 10 Maths PYQ · Real Numbers · Prime Factorization · 1 Mark · March 2024 · Standard
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