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February 2, 2021 at 11:42 am
#29852
Participant
3+ a+ b X 61 = 19947
3 +a+b X 7 = 3
21+ a+b = 3
So 21 Digit sum is already 3 so a+b must be 9
So options are 2,7 0r 1,8 0r 3, 6 0r 4, 5 , I tried with those options and got the answer of 327
327 X 61 = 19947