In following questions, one term in number series is incorrect. - Find out the incorrect number 1, 3, 10, 21, 64, 129, 256, 778

D. 256

In alphabet series, some alphabets are missing which are given in that order as one of the alternatives below it. Choose the correct alternative. - abca _ bcaab _ ca _ bbc _ a

C. ABAC

In following question, a number series is given with one term missing. Choose the correct alternative that will same pattern and fill in the blank spaces. - 2, 15, 41, 80,

D. 132

In alphabet series, some alphabets are missing which are given in that order as one of the alternatives below it. Choose the correct alternative. - cccbb _ aa _ cc _ bbbaa _ c

B. BACA

In alphabet series, some alphabets are missing which are given in that order as one of the alternatives below it. Choose the correct alternative. - b _ b _ bb _ _ bbb _ bb _ b

C. ABABAB