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

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Created May 31, 2010ReportNominate
Tags:math, Numbers, common, factor, gcf, greatest, minute, set