Q3. Find the values of the letters in each of the following and give reasons for the steps involved.
first clue :
we have A = a number which when multiplied by itself gives the same number in the unit digit.
possible numbers = 1 and 6
number when multiplied with 1 and added with the reminder of previous multiplication( A*A) = 9
both first and second clue implies that A = 6.
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