Number Series Questions

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

6, 11, 16, 21, 26, ?

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

18, 37, 76, 155, 314, ?

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

57, 69, 81, 93, ?, 117

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

23, 29, 24, 30, 25, ?

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

42, 47, 52, 57, ?, 67

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

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

147, 149, 152, 156, 161, ?

In the following question, one term in the number series is wrong. Find out the wrong term?

5, 10, 40, 80, 320, 550, 2560