B A

X B 3

________

57 A

________

Find the value of A and B

Q) B A x B 3 = 57 A

Ans)- As A x 3 ends with A, The only possible values of A are 0 and 5. A = 0 or 5

Let us consider A to be 5, 3x 5 = 15, 5 is in the units place.

Next, 3 x B = 7, the multiple of 3 closest to 7 is 6, 3 x 2 =6

So, let us consider B to be 2. If B = 2 and A = 5 the question will be - 25 x 23

25 x 23 gives 575. Therefore the value of A is 5 and B is 2.