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What is the sum of the first 5 natural numbers?
10
15
25
What is the sum of the first 4 odd integers?
16
What is the sum of the first 2 perfect squares?
5
9
13
What is the sum of the cubes of the first 4 natural numbers?
60
100
120
What is the sum of first 5 triangle number?
45
35
What is the sum of the first 6 positive even integers?
18
42
30
What is the sum of the fourth powers of the first 3 natural numbers?
46
98
126
What is the formula for the sum of the cubes of the first n natural numbers?
(n(n+1)2)2\left(\frac{n\left(n+1\right)}{2}\right)^2(2n(n+1))2
n(n+1)/2
n(n-1) (2n-1)/6
What is the formula for the sum of the first n natural numbers?
2n
n(n-1)
What is the formula for the sum of the squares of the first n natural numbers?
n(n+1) (2n+1)/6
It is done.