WAEC - Mathematics (1989 - No. 1)

If 3loga + 5loga - 6loga = log64, what is a?
4
6
8
16
32

Explanation

loga3 + loga5 - loga6
log(
a3 * a5/a6
) = loga64


a2 = 64 a = 8

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