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Question
Find the value of the letters in the following question.
A B
× 6
C 6 8
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Solution
6 × B is a number with unit digit 8.
Therefore, B = 3 or 8
For B = 3 equation A × 6 + 1 = C6 is not satisfied.
For B = 8 equation A × 6 + 1 = C6 is satisfied.
Hence, A = 7 and B = 8.
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