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?

Find the next number in the given series. 9, 11, 15, 17, 21, 23, ?

6 6 8 5 5 3 7 3 7 2 5 8 8 7 8 1 5 5 3 Using the above sequence find the term that does NOT belong to the group. 83, 35, 27, 81

A series is given with one term missing. Choose the correct alternative from the given ones that will complete the series. 105, 130, 180, 255, ?

In the following question, select the missing number from the given series.672, 666, 660, 654, ?

In the following question, select the missing number from the given series. 23, 28, 34, 41, 49, ?

What will come in place of the question mark (?) in the following number series?

18, 29, 42, 53, ?,77

What should come in place of question mark (?) in the following number series?

36, 18, 6, 3, 1, ?

What will come in place of the question mark (?) in the following number series?

256, ?, 190, 167, 148, 131