On multiplying a number by 7 all the digit in the product appear as 3's , the smallest such numbers is -

Solution (By Examveda Team)

$$\eqalign{ & {\text{According to question,}} \cr & x \times 7 = 333333 \cr} $$
(In answer 5 digit number are given, so we take 6 digit 333333)
$$\eqalign{ & x = \frac{{333333}}{7} \cr & x = 47619 \cr} $$