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A point C divides a line segment AB of length 4.5cm in the ratio 2:1, then the length of AC is
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Answer:
work is shown and pictured
Combinations = n! / (n - r)! r!
In this case:
n = 4
r = 3
Combinations = 4! /(4-3)! 3! = 24/(1)(6) = 24/6 = 4
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