Question

add the even numbers between 1 and 100

Answer 1

Answer:

5050

Step-by-step explanation:

We use the ecuation:

$S=\frac{n(n+1)}{2}$

Where:

S = Addition of the numers since 1 even n

n = Final number

In this case n = 100, then

$S = \frac{100*(100+1)}{2} = 5050$