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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Score 0/25 Timer 02:00
NumbersGCF
60, 72
72, 28
64, 4, 32
84, 27
1001, 44
6, 999
98, 70
n, n+1
87, 58
432, 168
65, 39
38, 114
117, 63
NumbersGCF
2010, (2)(3)(5)(67)
56, 63, 72
24/2, 36/2
242, 363
10^6, 5!
90, 45
25, 7555
Atomic number of Helium, Atomic number of Neon
√(900), √(324)
Years in a century, Days in a non-leap year
2^3, 3^2
1 googol, 48

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