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Question

AB+ AB+ B BB
A=___;B=___

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Solution

B + B + B = B → on adding B three times, we are getting B again at unit's place. This is only possible if B is either 0 or 5.

0 + 0 + 0 = 0 and 5 + 5 + 5 = 15;
So, 1 is carry. The answer is BB i.e., 55.

∴ Now we have

1 + A + A = 5

2A = 4

A = 2


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