Groups of Numbers

Name the sets or sequences that these numbers belong to.
Quiz by relessness
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Last updated: April 13, 2013
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First submittedApril 13, 2013
Times taken346
Average score40.0%
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Set
Group
π, √2, √-3, √5
Irrational
2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31
Prime
1, 3, 5, 7, 9, 11, 13
Odd
0, 1, 1, 2, 3, 5, 8, 13, 21, 34, 55
Fibonacci
4, 6, 8, 9, 10, 12, 14, 15, 16, 18
Composite
Set
Group
-5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6
Integer
1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13
Natural
0, 1, 3, 6, 10, 15, 21, 28
Triangular
1, 4, 9, 16, 25, 36, 49, 64
Square
(3, 4, 5), (5, 12, 13), (7, 24, 25), (9, 40, 41)
Pythagorean triple
+1
Level 68
Jul 3, 2013
Cool quiz!
+1
Level 64
Mar 21, 2016
Man, I was so proud of recognizing Fibonacci and Pythagorean triples instantly, but I couln't spell them :(
+1
Level 54
Jul 7, 2016
squareroot of -3 is not an irrational number, it is imaginary.