Number Series Questions

Which number will complete the series?

6 , 8 , 17 , 19 , 28 , 30 , ?

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.

87, 62, 42, 27, 17, ?

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

2187, 729, 243, 81, 27, ?

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

12, 17, 34, ?, 78, 83, 166

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

123, 120, 116, 111, ?, 98

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

19, 26, 40, 61, ?, 124