Multiple choice

The sum of all numbers from 1 to 50 is

  1. 1775

  2. 1275

  3. 1375

  4. 1456

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The sum of numbers from 1 to n is given by the formula n(n+1)/2. For n=50: 50×51/2 = 1275. This is a standard arithmetic progression sum.