If ex = 5, then x = ? [ যদি ex = 5ধয় তাহলে x = ? ] 

A 0.23

B 1.61

C 1.84

D 7.76

Solution

Correct Answer: Option B

এখানে, 

 ex = 5 

 => lnex = ln5 

 => x lne = 1.6094 

 => x × 1 = 1.61 

 ∴ x = 1.61 

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