Math Puzzles 5

Q 1: What replaces the question mark?

4 + 7 + 2 = 281435

7 + 3 + 9 = 212781

6 + 2 + 7 = 121456

2 + 8 + 5 = 164036

8 + 4 + 6 =?

Q 2: What replaces the question mark?

56 3 49 27 18

74 62 19 8 35

65 92 ? 34 81

Q 3: What replaces the question mark?

5 + 3 + 2 = 151022

9 + 2 + 4 = 183652

8 + 6 + 3 = 482466

5 + 4 + 5 = 202541

Then, 7 + 2 + 5 =?

Q 4: What replaces the question mark?

If 10×11×12=9

11×12×13=9

12×13×14=9

13×14×15=9

Then 14×16×20=?