If 2=5, 4 = 18, 6 = 39, 8 = 68 then 10 = ?

Options

A. 100
B. 105
C. 45
D. 81

Answer

B

Explanation

The patter of coding is as follows
`x^(2) + 1, x^(2) + 2, x^(2) + 3, x^(2) + 4,x^(2) + 5`.
i.e., ` 2^(2) +1 = 5 , 4^(2) + 2 = 18 , 6^(2) + 3 = 39, 8^(2) + 4 = 68`
Therefore , `10^(2) + 5 = 100 + 5 = 105`