On multiplying a number by 7 all the digit in the product appear as 3's , the smallest such numbers is -
Options:
A . 47649
B . 47719
C . 47619
D . 48619
Answer: Option C $$\eqalign{ & {\text{According to question,}} \cr & x \times 7 = 333333 \cr} $$ (In answer 5 digit number are given, so we take 6 digit 333333) $$\eqalign{ & x = \frac{{333333}}{7} \cr & x = 47619 \cr} $$
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