If 9²ˣ⁺¹ = 81, then x = ?

A 1/2

B 3/2

C 7/2

D 5/2

Solution

Correct Answer: Option A

 9²ˣ⁺¹ = 81
বা, 9²ˣ⁺¹ = 9²
বা, 2x+1-2
বা, 2x=1
বা,x=1/2

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