Q15 of 42 Page 156

In the multiplication table A8 × 3B = 2730, A and B represent distinct digits different from 0. Find A + B.

We have been given, A8 × 3B = 2730

What should be multiplied to 8 that gives 0 in the end digit.


We know, 8 × 0 = 0 and 8 × 5 = 40.


But B ≠ 0, so B = 5.


Now, we have


A8 × 35 = 2730



⇒ A8 = 78


Comparing the left side and right side in the equation, we get


A = 7


Thus, A = 7 and B = 5.


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