(22)x+3 = 256 হলে x = কত? 

B 1

C 2

D 4

Solution

Correct Answer: Option B

(22)x+3 = 256

⇒ 22x+6 = 28

⇒ 2x+6 = 8

⇒ 2x= 2

⇒ x = 1

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