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Aptitude · Q369

Number System

Competitive Exams · Aptitude · question 369

Q369

On multiplying a number by 7, all the digits in the product appear as 3’s. The smallest such number is :

A.
47619
Answer
B.
46719
C.
48619
D.
47649

Answer: Option A

Solution

Answer: Option A
Solution:
We keep on dividing 33333... by 7 till we get 0 as remainder.
Number System mcq solution image
∴ Required number = 47619