What is the sum of all even numbers between 1 and 100?

5050

1000

5555

10000

1+2+...+99+100 = 1+100+2+99+...+50+51 = 101+101+101+...+101 = 101*50 = 5050 It's a calculation method invented by Gauss.

I know

fdecomite

mathematicsnumbers

Numbers quiz Mathematics quiz

You will play as the United States

Answers by country

the Netherlands

70%

11%

France

66%

16%

Canada

54%

22%

13%

Poland

51%

10%

24%

12%

2896

Germany

49%

13%

21%

the United States

46%

14%

26%

10%

India

44%

22%

15%

the United Kingdom

39%

18%

25%

15%

Australia

22%

36%

18%

What is the sum of the opposite sides of a dice?

Augustus was born on 1 January 10BC. Which birthday did he celebrate at 1 January 10AD?

How many edges does a Möbius strip have?

What was the largest type of Viking ship?