The number of digits in the smallest number, which when multiplied by 7 yields all nines, is · ABC26GN0226

Subject: General Aptitude · Chapter: Number System

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

Answer (as printed): D

Explanation

We keep on dividing 999999 by 7 till we get 0 as remainder. ∴ Required number $=142857$. Number of digits $=6$.

Explanation as extracted from the printed page; notation may be imperfect.

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