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Earn +20 ptsQ: How do you add up all odd numbers till 100?
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If you add all the numbers from 1 to 100 what would it add up to?
5050
Add all the even numbers from 1 to 100?
It's 2550
What do all the even numbers between 2 up to 100 add up to?
102*25=2550
What do you get if you add every number from 1 to 100?
5050 To add all numbers from 1 to n: (n/2)(n + 1), in this case n = 100 so it is 50 x 101...
What do you get when you add all the numbers 1-100 up?
-99
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