Question

what will be the sum of adding all the possible 4 digit numbers formed by 7,9,1,3 using each of the digits only once ?​

Answer 1

Answer:

Since it's a 4 digit number, each digit will appear 6=24/4 times in each of units, tens, hundreds, and thousands place. Therefore, the sum of digits in the units place is 6(7+9+1+3)=120

Answer 2

Answer:

a short story that teaches a lesson (a moral) and that often has animals as the main characters

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