Which of the following options gives the correct chronological order of rulers of the Mauryan Empire?

Which number from the options will replace the question mark (?) in the following series?

2, 4, 8, 32, 256, ?

Which of the following numbers will replace the question mark (?) in the given series? 

19, 26, ?, 46, 59, 74

Select the option in which the given figure is embedded (rotation is not allowed).

Select the number that will replace the question mark (?) in the given number series.

146, 90, 56, 34, 22, ?

Select the option that is related to the third letter-cluster in the same way as the second letter-

Select the option figure, which when placed in the blank space of the figure marked ‘X’, would complete the pattern.

 ‘A & B’ means ‘A is the mother of B’

‘A @ B’ means ‘A is the husband of B’

‘A + B’ means ‘A is the wife of B’

At half past 5 in the evening, the smaller angle between the hour & minute hands of a clock is: