In which of the following numbers replace* by the smallest digit to make it divisible by 11 a)972*36
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sum of the digits in odd place = 6+*+7 = 13
sum of the digits in even place = 3+2+9= 14
14-13=1
that means we have to use 1 in place of star as if the difference of digits on odd and even place is zero ten or 11 then only it would be divisible by 11
check
6+1+7= 14
3+2+9=14
and difference of these is 0
# hence it is divisible by 0
sum of the digits in even place = 3+2+9= 14
14-13=1
that means we have to use 1 in place of star as if the difference of digits on odd and even place is zero ten or 11 then only it would be divisible by 11
check
6+1+7= 14
3+2+9=14
and difference of these is 0
# hence it is divisible by 0
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