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The rainbow is violet on the inside of its arc. What color is it on the outside?

blue
green
yellow
red
Visible light spans from red to violet. It is easy to remember, since wavelengths just outside the visible range are called infrared and ultraviolet.
Hà Linh Chi
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Very interesting!
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Answers by country

blue
green
yellow
red
answers
flagGhana
8%
0%
0%
75%
12
flagIndia
10%
7%
6%
74%
457
flagIsrael
9%
0%
18%
72%
11
flagSingapore
18%
9%
0%
72%
11
flagAustralia
10%
10%
10%
69%
49
flagthe United States
16%
6%
10%
65%
612
flagMalaysia
13%
4%
13%
65%
23
flagUnknown
19%
6%
9%
64%
31
flagCanada
23%
6%
3%
63%
30
flagthe United Kingdom
20%
8%
13%
57%
183
flagAustria
11%
5%
22%
57%
35
flagPakistan
6%
15%
28%
50%
32
flagSwitzerland
6%
12%
25%
50%
16
flagGermany
20%
11%
14%
49%
192
flagthe Philippines
33%
5%
7%
49%
53
flagthe Netherlands
18%
22%
11%
48%
27
flagGreece
20%
8%
24%
48%
25
flagPoland
18%
10%
22%
47%
17096
flagSouth Africa
31%
5%
15%
47%
19
flagNigeria
40%
10%
20%
20%
10

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red
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green
yellow

Why is White Sands Desert in New Mexico so purely white?

it is gypsum
it is very fine grained sand
it iswhite quartz
it is an optical illusion

Who is more likely to be colorblind?

men
women
sailors
everyone with the same probability

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Norway
Turkey
Hungary
Japan