Number Series Questions

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

470, 465, 460, 455, ?, 445

Which number will complete the series?

11,13,17,19,23,25,_____

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

91, 100, 118, 145, ?, 226

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

52, 41, 32, 25, ?, 17

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

2, 4, 13, 41, 106, ?

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

108, 104, 100, 96, 92, ?

Find the value of 6 + 11 + 16 + 21 + 21 + .... + 71.

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

3, 5, 7, 11, 13, ?