Q3. Find the values of the letters in each of the following and give reasons for the steps involved.

Answers (1)

Here

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 

Second Clue:

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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