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Question
Test the divisibility of 5869473 by 11.
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Solution
5869473
A number is divisible by 11 if the difference of the sums of the digits at the odd places and that at the even places (starting from one place) is either 0 or a multiple of 11.
Sum of the digits at even places = 7 + 9 + 8
= 24
Sum of the digits in odd places = 3 + 4 + 6 + 5
= 18
Difference = 24−18
= 6
Since 6 is not divisible by 11, 5869473 is not divisible by 11.
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