Find the missing number: 15,36,28 / 10,20,24 / 7,9,11 / 12,25,?

Find the missing number: rows 7,3,9 / 24,5,? / 5,2,4

Find the missing number in the following number series. 3, 5, 8, 10, ?, 15, 18, 20

Find the missing number in the given series 2, 12, 36, 80, 150, ?

Find the missing number in the given series 8, 7, 11, 12, 14, 17, 17, 22, ?

Find the missing number in the given series 24, 60, 120, 210, ?