What should come in place of the question mark (?) in the given series?
5, ?, 24, 51, 106, 217

Given: 5, ?, 24, 51, 106, 217

Logic: Numbers are multiply by 2 and adding + 1, + 2, + 3, + 4 and + 5

(5 $$\times$$ 2) + 1 = 10 + 1 = 11

(11 $$\times$$​ 2) + 2 = 22 + 2 = 24

(24 $$\times$$ 2) + 3 = 48 + 3 = 51

(51 $$\times$$​ 2) + 4 = 102 + 4 = 106

(106 $$\times$$​ 2) + 5 = 212 + 5 = 217

So, the missing term is 11.

Thus, correct option is (c).