​Look at this series: 21, 25, 18, 29, 33, 18. What number should come next?

What will come in place of the question mark (?) in the given series?
103 119 135 151 167?

Which of the following numbers will replace the question mark (?) in the given series?
111, 114, 119, ?, 135

What should come in place of the question mark (?) in the given series?
24 31 40 47 56 63 ?

What should come in place of the question mark (?) in the given series?
26 26 38 38 50 50 ?

Select the number from among the given options that can replace the question mark (?) in the following series.
121, 144, 169, 196, ?

What should come in place of the question mark (?) in the given series?
61 66 72 77 83 ?

What should come in place of the question mark (?) in the given series?
76 81 91 111 151 ?

What should come in place of the question mark (?) in the given series?
24, 30, 25, 29, 26, ?

What should come in place of the question mark (?) in the given series?
5, 11, 23, 47, 95, ?

What should come in place of the question mark (?) in the given series?
21, 57, 87, 111, 129, ?