Question

5. addition of consecutive integers

Evaluate: 5+6+7+8+...+103+104
Pick ONE option
5450
5050
47
1.018 e 5
Clear Selection

Answer 1

(a) 5450

Explanation:

The sum of an arithmetic series is the average of the first and last terms, multiplied by the number of terms.

Here, that is ...

(5 +104)/2 × (104 -5 +1) = 109×100/2 = 5450