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# what is the greatest common factor of 350 and 2450?

350 and 2450... need answer!

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- PuzzlingLv 71 decade agoFavorite Answer
Break each number down into its prime factors first:

350 / 2 = 175

175 / 5 = 35

35 / 5 = 7

7 / 7 = 1

2 x 5 x 5 x 7 = 350

2450 / 2 = 1225

1225 / 5 = 245

245 / 5 = 49

49 / 7 = 7

7 / 7 = 1

2 x 5 x 5 x 7 x 7 = 2450

Take the common factors (2, 5, 5, 7).

2 x 5 x 5 x 7 = 350

So the common factor is:

350

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