Question

If:

2=6     
3=12
4=20
5=30
6=42

Then

9= ??

Answer 1

From the given infirmation

2=2×3=6
3=3×4=12
4=4×5=20
5=5×6=30
6=6×7=42
So
9=9×10=90

So the answer is 90

Answer 2

9= 90 will be the answer

Answer 3

2 * 3 = 6
3 * 4 = 12
4 * 5 = 20
5 * 6 = 30
6 * 7 = 42
7 * 8 = 56
8 * 9 = 72
9 * 10 = 90

Ans :- 90

Answer 4

9*10=90 IS THE CORRECT ANSWER
SINCE IT FOLLOWS ORDER n*(n+1)

Answer 5

THE ANSWER IS 90

2 x 3 = 6
3 x 4 = 12
4 x 5 = 20
5 x 6 = 30
6 x 7 = 42

And hence,

9 x 10 = 90

Answer 6

2=6
3=12
4=20
5=30
6=42
Then 9=90