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Maths

What are three integers that are less then 25 the range is 8 and the mean is 15

Reply 1

There's a few you can pick from as long as they add up to 30 and the largest and smallest number have a difference of 8.

Reply 2

Original post by teenage-godmothe
What are three integers that are less then 25 the range is 8 and the mean is 15

I tried😭 how do you do it I can't seem to get the mean to be 15 it always ended up as a decimal

Reply 3

Well, what if you guess one of them is 15, and it happens to be in the middle one...
(Think a bit deeper - why do we want to make such guess?)
(edited 2 months ago)

Reply 4

All the 3 numbers have to be below 15, such that you can't have 2 being over 15 because they will add up to more than 30. So the largest possible number is 15.

Reply 5

Original post by Bjdjd
All the 3 numbers have to be below 15, such that you can't have 2 being over 15 because they will add up to more than 30. So the largest possible number is 15.


So the numbers are 7,8 and 15.

Reply 6

Original post by Bjdjd
So the numbers are 7,8 and 15.

For 3 numbers to have a mean of 15, they must sum to 45, not 30. Then one way is as tony suggests.

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