Which is the highest peak in

156, 172, 196, ?, 268, 316

580 557 528 497 ? 419

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

10, 15, 30, 75, 225, 787.5, ?

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

10, 17, 26, 37, 50, ?

Find the missing number in the given number series.

 1165, ?, 1040, 985, 935, 890 

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

10, 11, 15, 31, 95, ?

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

77, 198, 342, 511, 707, ?

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

28, 29, 38, 63, 112, 193, ?

27 28 32 41 57 ?