Question

if
2=6
3=12
4=20
5=30
6=42
then 9 =????

Answer 1

Answer : $\bold{9 \: = \: 90}$


$\bold{Explanation :}$


if 2 = 6 , 3 = 12 , 4 = 20 , 5 = 30 , 6 = 42 then 9 = ? 

2 x 3 = 6 

3 x 4 = 12 

4 x 5 = 20 

5 x 6 = 30 

6 x 7 = 42 

7 x 8 = 56. 

8 x 9 = 72 

9 x 10 = 90 

Hence : 

$\bold{Answer : 9 \: = \: 90}$

Answer 2

Heyaaa mate

The answer is:-

$2×3 =6$

$3×4=12$

$4×5=20$

$5×6=30$

$6×7=42$

$7×8=56$

$8×9=72$

$9×10=90$

So,

9 = 90

Hence,

The required number is $\bold{90}$

Hope it helps you

Thanks