Q560
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
AnswerAnswer: Option D
Solution
Answer: Option D
Solution:
We keep on dividing 99999..... by 7 till we get 0 as remainder.
∴ Required number = 142857
Number of digit = 6