Latest Infosys Aptitude Question SOLUTION: Find the sum of 4 digit numbers which are made by 1,2,5,6

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Find the sum of 4 digit numbers which are made by 1,2,5,6

Asked In Infosys rahul (10 years ago)

Solved Nilanjana Chaudhary Read Solution (5)

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Nilanjana Chaudhary  (10 years ago)

(n-1)!(1111....)(sum of digits)
(4-1)!(1111)(1+2+5+6)
93324

Is this solution Helpfull? Yes (44) | No   

abhinav trivedi  (10 years ago)

(n-1)!(sum of digits...n)*(1111.....n)
(4-1)!(1+2+5+6)*(1111)
3!(14)*(1111)
6*15554
93324

Is this solution Helpfull? Yes (6) | No   

debaditya bose  (10 years ago)

1+2+5+6=14.The sum will appear 6 times for the unit,tenth,hundred and thousand digits,so the total sum will be 6*14(1000+100+10+1)=93.324

Is this solution Helpfull? Yes (4) | No (1)  

Anjali Kumari  (10 years ago)

(n-1)!(1111)*(sum of digits)
(4-1)!(1111)*(1+2+5+6)
93324

Is this solution Helpfull? Yes (4) | No   

Ashish Kumar  (10 years ago)

Number of digits:- 1,2,5,6. All digits r made by hem. So sum of digits are 14.
Now we have to find out the how many numbers made by using these digits.
By starting with 6 digit number we can made 6 different numbers(6521,6512,6251,6215,6152,6125)..
By starting 5 num we can also create 6 numbers.
By starting 2- we can create 6 numbers.
By starting 1- 6 numbers also.
So total numbers created by 4 digits is:- 24.
Here all numbers are the same digit made by 1256. and its sum is 14.
so sum of all 4 digit numbers is:- 14*24=336 ANS...

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