log2√5400 এর মান নিম্নের কোনটি?

A 4

B 5

C 25

D 50

Solution

Correct Answer: Option A

log2√5400

400 = (20)2 = (4X5)= {(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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