Find the missing terms: 2, 15, 4, 12, 6, 7, ?, ?

Find the missing value: 4, 23, 60, 121, ?

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 given series 2, 65, 7, 59, 12, 53, ?, ?

Find the missing number in the given series 2, 6, 12, 20, 30, 42, 56, ?