Direction (Q. 1 - 5): What value should come in place of question mark (?) in the following questions?

964 x 1980/396 ÷ 1980/396 = ?

315/16 x 288/21 = 4 x ?

0.36 × 0.008

160% of 16000 = ?

3 1/4 + 6 3/4 x 2 1/3 = ?

Direction (Q. 6 - 10): What value should come in place of question mark (?) in the following number series?

Q. 4 ? 36 64

Q. 1, 2, 5, 12, 27, 58, 121, ?

Q. 8 44 258 1540 ?

Q. 70 58 47 37 28 ?

Q. 6 24 81 255 ?