ABC26GN0226 · Number System

Subject: General Aptitude · Chapter: Number System · Exam: · Marks: · Difficulty:

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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