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What least value must be given to * so that the number 97215*6 is divisible by 11 ?
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- 1
- 2
- 3
- 5
Correct Option: C
If sum of ODD positioned digits minus the sum of the EVEN positioned digits is divisible by 11 then the number is divisible by 11.
Sum of odd positioned digits - sum of even positioned digits = (9 + 2 + 5 + 6) - (7 + 1 + x) =14 - x
It must be divisible by 11. So x = 3.