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The smallest number that must be added to 803642 in order to obtain a multiple of 11 is
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- 1
- 4
- 7
- 9
Correct Option: C
∴ The required number = 11 – 4 = 7
2nd Method to solve this question :
Sum of digits at odd places = 2 + 6 + 0 = 8, sum of digits at even places = 4 + 3 + 8 = 15. For divisibility by 11, difference i.e., (15 – 8) = 0 or mutiple of 11.
∴ The required number = 7
