Aptitude - Numbers - Discussion
Discussion Forum : Numbers - General Questions (Q.No. 104)
104.
On multiplying a number by 7, the product is a number each of whose digits is 3. The smallest such number is:
Answer: Option
Explanation:
By hit and trial, we find that
47619 x 7 = 333333.
Discussion:
10 comments Page 1 of 1.
Vicky said:
10 months ago
@All.
How to found 3s was 6 digit 333333? Anyone, explain this
How to found 3s was 6 digit 333333? Anyone, explain this
Vishnu vardhan voleti said:
6 years ago
Its simple.
4+7+6+1+9=(27)2+7=9.
9x7(63) 6+3=9.
4+7+6+1+9=(27)2+7=9.
9x7(63) 6+3=9.
(1)
MANSURI said:
6 years ago
Take a string of 3's e.g. 333333....
Divide this till remainder becomes zero.
So, Answer is 47619.
Divide this till remainder becomes zero.
So, Answer is 47619.
(2)
Siri said:
6 years ago
Please explain it clearly.
(1)
Durga moksha said:
7 years ago
What is meant by hit and trial method?
Can anyone explain it?
Can anyone explain it?
(1)
Anjan said:
10 years ago
No need for hit and trial.
From the option we can say that the number each of whose digits are 3 will be 333333.
So divide it by 7 and you will get the answer.
From the option we can say that the number each of whose digits are 3 will be 333333.
So divide it by 7 and you will get the answer.
(1)
Narottam tiwari said:
1 decade ago
Simply you write down 3 each time and divide by 7. At a time you will get the desired solution. Like 33/7 = now remainder is 53/7 (added another 3) now remainder is 43/7 (added another 3).
And so on at a point the number would be divisible and that's your answer. In simple way = 333333/7 = 47619.
And so on at a point the number would be divisible and that's your answer. In simple way = 333333/7 = 47619.
Diksha said:
1 decade ago
There is not much time to calculate each and everything, I am still not understand. Please give the proper solution.
Tirthesh said:
1 decade ago
There is no hit and trial the solution is simple.
By multiplying all the option by 7 we will get a 6 digit no then it must be 333333.
So answer is 333333/7 = 47619.
By multiplying all the option by 7 we will get a 6 digit no then it must be 333333.
So answer is 333333/7 = 47619.
(1)
Srinivasane said:
1 decade ago
The question is product is all 3's divide that by 7 gives the answer.
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