What number is that?
14
51
71
74
The term 'daltonism' comes form the name of English chemist John Dalton, who published the paper "Extraordinary facts relating to the vision of colours" in 1798, after the realization of his own colour blindness.
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Answers by country
14
51
71
74
answers
the Philippines28
Pakistan46
Malaysia22
Nigeria19
Italy23
Australia47
Sweden13
the United States463
Republic of Ireland24
the United Kingdom184
South Africa14
India229
the Netherlands16
Germany357
Austria52
Greece23
Unknown22
Poland18585
Switzerland39
Canada36