66, 36, 18, ?

Choose the missing terms out of the given alternatives.<br> b e d f ? h j ? l

11, 13, 17, 19, 23, 25, ?

2, 5, 9, ?, 20, 27

Choose the missing terms out of the given alternatives.<br> ATTRIBUTION, TTRIBUTIO, RIBUTIO, IBUTI, ?

One term in the number series is wrong. Find out the wrong term.<br> 2, 5, 10, 50, 500, 5000

Choose the missing terms out of the given alternatives.<br> B, D, F, I, L, P, ?

Choose the missing terms out of the given alternatives : 2Z5, 7Y7, 14X9, 23W11, 34V12, ?

1, 9, 25, 49, 81, ?