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Question

If 2A7 ÷ A = 33, then find the value of A.

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Solution

A × 33=2A7
We observe that A × 3 can never be a single digit number 2, so
A × 3 must be a two-digit number, whose ten's digit is 2 and unit's digit is the number less than or equal to A,
Therefore, the value of A can be 9, as the values of A from 1 to 8 do not fit.

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