prp  qrp  prr  pqr  qrp  rpr  qqr  rpr  qpr  qrr qpr  qpr

If every third letter starting from the left is replaced by a number beginning with 1 then which letter/ number will be 16th from the right?

In the following question, select the missing number from the given series.
3, 4, 5, 4, 9, 10, 6, 16, 15, 9, 25, 20, 13, 36, ?

In the following question, select the missing number from the given series.
7, 19, 42, 87, ?

In the following question, select the missing number from the given series.
1357, 3085, 5282, 8026, ?

A series is given, with one term missing. Choose the correct alternative from the given ones that will complete the series.

9 , 21, 45, 93, ? , 381

In the following question, select the missing number from the given series.
19, 38, ?, 228, 684, 1368

In the following question, select the missing number from the given series.

2, 4, 13, 41, 106, ?

Select the missing number from the given responses:

Which number will complete the series?

63, 72, 81, 90, ____, 108