1.

If log4 2 + log4 4 + log4 x + log4 16 = 6, then x is equal to(a) 4 (b) 8 (c) 32 (d) 64

Answer»

(c) 32

Hint.

Given, log4 (2 × 4 × \(x\) × 16) = 6 ⇒ log4 (128\(x\)) = 6 

⇒ 128x\(x\) = 46              [Using loga x = n ⇒ x = an]



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