Number Series Questions

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

15, 7.5, 7.5, ?, 22.5, 56.25

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

21, 11, 32, 43, 75, ?

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

46, 41, 35, 30, ?, 19, 13

What will come in place of the question mark (?) in the given question?

1.5 % of 4600 + 2.8% of 2000 - 109 = ?

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

101, 97, 93, 89, ?, 81

Which number will complete the series?

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

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

14, 14, 21, 42, 105, ?

Which of the following terms follows the trend of the given list?

XYXYXYxY, XYXYXyXY, XYXYxYXY, XYXyXYXY, XYxYXYXY,  _______________.