two digit number is such that the product of its digit is 6 when 9is add it to the number the digits interchange their places find the number
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By trial & error method
The possible pair of factors of 6 are :
a) 1 and 6
Verification : 16 + 9 ≠ 61
b) 2 and 3
Verification : 23 + 9 = 32
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