The number of digits in the smallest number, which when multiplied by 7 yields all nines, is :
A. 3
B. 4
C. 5
D. 6
Answer: Option D
Solution (By Examveda Team)
We keep on dividing 99999..... by 7 till we get 0 as remainder.
∴ Required number = 142857
Number of digit = 6
This Question Belongs to Arithmetic Ability >> Number System
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