On multiplying a number by 3, the product is a number each of whose digits is 7. what is the smallest such number?
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Number = x
>> 3x = ___. ( Has a digit 7)
(Hint : Check 3 table which has 7 in it)
that is 27.
So 3x = 27
>> x = 27/3
>> x = 9.
So the smallest such number is 9.
>> 3x = ___. ( Has a digit 7)
(Hint : Check 3 table which has 7 in it)
that is 27.
So 3x = 27
>> x = 27/3
>> x = 9.
So the smallest such number is 9.
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