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Logarithm Actual Question in CMAT 2023 Slot – 2

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Q1. If 5a = 9b = 2025, then the value of ab / a+b.

A 4
B 3
C 2

D 1

EXPLANATION

C

5a = 2025

Applying log on both the sides, we get

Similarly, we get b = log9 2045

1 / a = log2045 5

1 / b = log2045 9

1 / a + 1 / b = log2045 45

ab / a + b = log45 2045 = 2

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