Oh, dude, let me break it down for you. So, a factor is basically a number that divides another number without leaving a remainder, right? Well, 7 is not a factor of 30, but it is a factor of 40. Like, 7 goes into 40 five times with no leftovers, so yeah, 7 is totally a factor of 40.
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No, 3 is not a factor of 40.
The Greatest Common Factor of 30, 40: 10
The GCF of 20 and 40 is 20 The GCF of 15 and 30 is 15 The GCF of 15, 20, 30 and 40 is 5.
Closer to 40. 37 is 3 away from 40 37 is 7 away from 30 3 is smaller than 7, so it's closer to 40.
Forty divided by 8 then multiplied by 7 is 35.The answer is 35.