Question

If 5*7=4,8*4=52 and 7*6= 31 then find the value of 5*2

Answer 1

Answer:

I think, 5×2+5=15

so, 5×2=15......

Answer 2

The correct answer is 19.

Explanation:

We have,

5*7 = 4, 8*4 = 52 and 7*6 = 31

To, find the value of 5*2 = ?

In given question, the pattern of number series have common is:

5*7=4 where the difference is  (35 - 4 = - 31)

8*4=52 where the difference is (52 - 32 = + 20)

7*6= 42 where the difference is (42 - 3 1= -11)

The pattern in the question is in difference of difference which is 31 - 20 = 11

Similarly,

20 - 11 = + 9

5*2 = 10 + 9 = 19

Thus, the required answer is 19.