find the sum of all the numbers 1 to 1000

Answers were Sorted based on User's Feedback



find the sum of all the numbers 1 to 1000..

Answer / sami

500500

Is This Answer Correct ?    151 Yes 15 No

find the sum of all the numbers 1 to 1000..

Answer / sanjay chadha

Use the formula for sum n*(n+1)/2 thus

sum from 1 to 1000 = 1000 * (1000+1)
-------------- = 500500
2

Is This Answer Correct ?    124 Yes 9 No

find the sum of all the numbers 1 to 1000..

Answer / viswanath

Yes, Sanjay and Lala is correct

1000*(1000+1)/2=500500

Is This Answer Correct ?    72 Yes 8 No

find the sum of all the numbers 1 to 1000..

Answer / nitesh

sum of n natural numbers = n(n+1)/2
so your answer is 500500

Is This Answer Correct ?    43 Yes 4 No

find the sum of all the numbers 1 to 1000..

Answer / selvakumar.b

1000*(1000+1)/2=500500 This is a Correct Answer

Is This Answer Correct ?    37 Yes 5 No

find the sum of all the numbers 1 to 1000..

Answer / prasad

The sum of 1 to 1000 is 500500..by prasad 9885536816

Is This Answer Correct ?    39 Yes 12 No

find the sum of all the numbers 1 to 1000..

Answer / lala

answer is 500500

Is This Answer Correct ?    30 Yes 7 No

find the sum of all the numbers 1 to 1000..

Answer / booba

For each number between 1 and 499 there is a corresponding
number between 501 and 999 which, when added together,
equals 1000.

For example:

1 + 999 = 1000
2 + 998 = 1000
...
499 + 501 = 1000

Now, there are 499 pairs like that. Add them together and
you get 499,000

Add to that 1000 and 500, and you get 500,500, which is your
total.

Is This Answer Correct ?    24 Yes 3 No

find the sum of all the numbers 1 to 1000..

Answer / zach

I use a different formula I made up that works for any set of consecutive numbers e.g. 21-639. Highest number is n, lowest number is x
------- (n+x)*(n/2)
--------(1+1000)*(1000/2)
--------(1001*500

Is This Answer Correct ?    11 Yes 3 No

find the sum of all the numbers 1 to 1000..

Answer / shashwat

n+n+1/2
1000+1000+1/2
1000+1001/2=500500

Is This Answer Correct ?    8 Yes 2 No

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