Which Number would come in place of the underline mark in the series.

3, 9, 21, ___ , 93

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

13, 19, 32, 51, 83, ?

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

57, 54, 48, 39, ?, 12

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

23, 23, 46, 138, 552, ?

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

23, 19, 15, 11, ?

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

14, 14, 21, 42, 105, ?

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

42, 47, 52, 57, ?, 67

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

43, 58, 88, 133, ?, 268

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

67, 80, 93, ?, 119, 132