At what rate percent per annum will a sum of money

24, 42, 60, ?,  96, 114

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

10, 17, 26, 37, 50, ?

660, 653, 639, 618, 590, ?

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


75, 219, 388, ?, 809, 1065

168, 178, ?, 273, 400, 618, 963

60      61       57      66       ?       75       39

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

2, 5, 14, 41, 122, 365, ?

81, 83, 87, 95, 111, ?

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

400, 841, 1202, ?, 1716, 1885

64, 66, 69, 74, 81, ?