Which of the following numbers will replace the question mark (?) in the given series?
5, 11, 24, 51, ?

Correct option is D

Given: 5, 11, 24, 51. ?
Logic: Number is getting 2 times and increased by +1, +2, +3,+4.....
5 ×2 + 1 =11
11× 2 +2= 22 + 2 = 24 
Similarly,
24× 2 + 3 = 48 + 3 = 51
51 × 2 + 4 = 102 + 4=  106
Thus, correct option is (d).