[Missing-number diagram: 3,4,2,3,1 / 8,5,3,2,1 / 5,6,4,5,1 / 8,6,5,4,2 / 7,8,4,5,?]

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

The missing number in 3, 8, 13, 24, 41, 70, ......

Missing number: 28, 33, 31, ?, 34, 39

Find the missing numbers in the given series 1, 2, 3, 14, 5, 34, 7, ?, ?

Find the missing number in the given series 3, 4, 7, 11, 18, 29, ?