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Q: What are the longest factor string for 840 and explain why?

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2 x 2 x 2 x 3 x 5 x 7

Find one factor, divide by it to get the other factor. Continue separating each of the factors into smaller factors, until you only have prime numbers. For example, 840 = 2 x 420. Now continue finding smaller factors for 420.

sqrt(840)= 28.9828 (to 4 dp)

There are 12 inches in one foot. Therefore, 840 inches is equal to 840/12 = 70 feet.

The prime factors of 840 are: 2, 3, 5, 7.

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2x2x2x3x5x7

the longest factor string for 840 is: 2x2x2x3x5x7. I hoped that helped m! Have a good rest of your day!

7*5*4*3*2 Is the longest factor string of 840

7x2x3x2x2x5=840

You will know because all of the numbers are prime.

2 x 2 x 2 x 3 x 5 x 7

2 x 2 x 2 x 3 x 5 x 7

36 of them.

Only one can be longest.

32 is not a factor of 840.

actually 7 is a factor of 840, because when you divide 7 into 840 you get 120 with no remainders therefore making it a factor of 840.🤡

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