What should come in place of the question mark '?' in the following number series?

0.25, 1.25, 4.5, ?, 70, 355

What should come in place of the question mark '?' in the following number series?

77, 76, 84, 57, ?, – 4

What should come in place of the question mark '?' in the following number series?

29, 30, 26, 35, ?, 44

What should come in place of the question mark '?' in the following number series?

8.5, 9.5, 21, 66, ?, 1345

What should come in place of the question mark '?' in the following number series?

6, 8, 11, 16, 23, ?

What should come in place of the question mark '?' in the following number series?

64, 62, 65, 60, 67, ?

What approximate value should come in the place of question mark (?) in the following question?

{44.95 - (16.97 × 2.93 - 2.99 × 1.92)} = ?

What approximate value should come in the place of question mark (?) in the following question?

(59.99% of 3499.99) + {(19.92% of 1224.95) ÷ 4.95} = ?