What's the name of this letter?

omega

sigma

delta

lambda

Sigma is a commonly used symbol of addition.

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Answers by country

Greece

100%

Estonia

92%

Republic of Ireland

10%

80%

10%

the Netherlands

13%

77%

Australia

76%

11%

Poland

71%

11%

8173

France

17%

68%

10%

the United Kingdom

13%

67%

13%

Germany

12%

59%

18%

102

Russia

21%

58%

Ukraine

10%

58%

10%

13%

Spain

10%

55%

15%

the United States

24%

52%

16%

Austria

15%

52%

26%

Switzerland

28%

50%

21%

Italy

23%

47%

15%

305

Belarus

33%

46%

13%

India

20%

46%

26%

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