Choose the missing terms out of the given alternatives : ajs , gpy , ? , sbk , yhq

Choose the missing terms out of the given alternatives : R, U, X, A, D, ?

Choose the missing terms out of the given alternatives : A, I, P, V, A, E, ?

1, 2, 6, 7, 21, 22, 66, 67, ?

1, 1, 2, 6, 24, ?, 720

Which term of the series 5, 10, 20, 40, ..... is 1280?

Choose the missing terms out of the given alternatives.<br> AZ, GT, MN, ?, YB

Choose the missing terms out of the given alternatives : P E R P E N D I C U L A R, E R P E N D I C L A , R P E N D I C …

Choose the missing terms out of the given alternatives : 2, A, 9, B, 6, C, 13, D, ?