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1. FindFind the sum of all possible 3-digit numbers that can be formed byusing 0, 2 and 7 where the repetition of the digit is not allowed. ​

Answer»

All POSSIBLE 3 digit numbers = 207, 270, 702, 720 as 0 can’t be at hundredth place
Sum of these four numbers = 1899
So ANS is 1899

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