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Question
Use a method of your own choice to find the H.C.F. of 45, 75 and 135.
Solution
Factor of 45 = F45 = 3 x 3 x 5
Factor of 75 = F75 = 3 x 5 x 5
and Factor of 135 = F135 = 3 x 3 x 3 x 5
Now the common factors of 45, 75 and 135 = 3 and 5
H.C.F. = 3 x 5 = 15
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