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Earn +20 ptsQ: What is formula to find sum of n even numbers?
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What is the formula to find out the sum of first n even numbers?
n*(n+1)
Find the sum of first 20 even numbers. sum?
The sum of the first 20 even numbers... is 110
What is the formula of adding all even numbers?
You cannot. There are infinitely many even numbers and their sum is not convergent.
What is the formula to find sum of first n prime numbers?
there isn't a formula for it.you need to calculate it by your own.
What is the sum of the fist 40 even numbers?
You can use the formula for the sum of an arithmetic series to calculate that quickly. (Of course, you can also type the numbers into Excel, and get the sum - but that doesn't scale well - e.g., it won't work well if you are then asked, for instance, to get the sum of the first million even numbers.)
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