On multiplying a number by 7, the product is a number each of whose digits is 3. The smallest such number is: Pick one:
A) 48759
B) 51236
C) 47619
D) 6974
E) 1235
Explanation:   By hit and trial, we find that   47619 x 7 = 333333.   ANSWER:47619
<result>C</result>
On multiplying a number by 7, the product is a number each of whose digits is 3. The smallest such number is: