A 4
B 5
C 25
D 50
Correct Answer: Option A
log2√5400
400 = (20)2 = (4X5)2 = {(2√5)2}2 =(2√5)4
এখন, log2√5400 = log2√5(2√5)4
=4 log2√5(2√5)
=4
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