Question

With the help of mathematical formula, find out a five digit number
from "369275which is completly divisible by "11 "​

Answer 1

Given :  369275

To find : a five digit number out of given number  completely divisible by "11"

Solution:

369275

This is a six digit number

hence to get 5 digit number we need to remove 1 digit

1 digit out of 6 can be removed in 6 ways

Hence possible 6 numbers are

69275

39275

36275

36975

36925

36927

69275  = 6297 x 11 + 8

39275 =  3570 x 11 + 5

36275 =  3397 x 11 + 8

36975 =  3361 x 11 +  4

36925 =  3356 x 11 + 9

36927 =  3357 x 11  

36927 is the number completely divisible by 11

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