Science Quiz / Two minute math: GCF

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Can you name the greatest common factor for each set of numbers?

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NumbersGCF
87, 58
38, 114
98, 70
2^3, 3^2
64, 4, 32
Years in a century, Days in a non-leap year
84, 27
60, 72
1 googol, 48
n, n+1
24/2, 36/2
1001, 44
√(900), √(324)
NumbersGCF
117, 63
65, 39
25, 7555
90, 45
2010, (2)(3)(5)(67)
Atomic number of Helium, Atomic number of Neon
10^6, 5!
6, 999
72, 28
432, 168
242, 363
56, 63, 72

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