Written down and added together.This sum is divisible by which num????explain me plz ..answer is 9
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1) As given, four consecutive integers lower than 81 are (81-1), (81-2), (81-3) & (81-4)
Similarly higher of 81 are: (81+1) (81+2), (81+3) & (81+4)
2) Hence the sum of these 8 numbers are: 81 x 8 = 9 x 9 x 8
Thus it is divisible by 9
[There are more divisors for this; however I have limited to only value 9, as per your requirement]
Similarly higher of 81 are: (81+1) (81+2), (81+3) & (81+4)
2) Hence the sum of these 8 numbers are: 81 x 8 = 9 x 9 x 8
Thus it is divisible by 9
[There are more divisors for this; however I have limited to only value 9, as per your requirement]