If:
2=6 3=12 4=20 5=30 6=42
Then
9= ??
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
9= 90 will be the answer
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
9*10=90 IS THE CORRECT ANSWER SINCE IT FOLLOWS ORDER n*(n+1)
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
2=6 3=12 4=20 5=30 6=42 Then 9=90
On behalf of Sture Sjöstedt