The highest common factor is 9
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72 = 2 x 2 x 2 x 3 x 3
45 = 3 x 3 x 5
90 = 2 x 3 x 3 x 5
factors in common: 3 x 3 (1, 3 & 9)
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Common factors of 36, 72, and 90 are: 1, 2, 3, 6, 9, and 18.
It is: 9
9, 18, 27, 36, 45, 54, 63, 72, 81, 90.
The Least Common Multiple (LCM) of 40, 72, and 90 is 360.
For 77 83 69 72 85 90 95 75 55 45: σ=15.4071