Question

Find the sum of all positive integers from 5 to 1555 inclusive, that are divisible by 5.

Answer 1

Answer:

steps below

Step-by-step explanation:

Sum = n * (a₁ + aₙ) / 2

n = 1555-5+1 = 1551

Sum = 1551*((5+1555)/2)

        = 1209780

        = 5 * 241956