Huge Sum

Computer Science Level 3

0 2 4 6 … 2012 2014 2016 0 \, 2 \, 4 \, 6 \dots 2012 \, 2014 \, 2016 1 3 5 7 … 2013 2015 2017 1 \, 3 \, 5 \, 7 \dots 2013 \, 2015 \, 2017 The above expressions shows the concatenation of the the even and odd numbers less than or equal to 2017 respectively.

What is the sum of the digits of the number obtained as the sum of the two numbers described above?


The answer is 14986.

Zeeshan Ali by Zeeshan Ali , 25, Pakistan

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1 solution

Bill Bell
Feb 19, 2016 
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first=int(''.join([str(i) for i in range(0,2018,2)]))
second=int(''.join([str(i) for i in range(1,2019,2)]))

print (sum(int(c) for c in str(first+second)))

3 Helpful 0 Interesting 0 Brilliant 0 Confused

Nice three-liner!

Harsh Shrivastava - 5 years, 3 months ago

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Thank you! Very generous.

Bill Bell - 5 years, 3 months ago

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