khatyjee
perineum factors of 250
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frx
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I assume you mean prime, haha
khatyjee
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ops sorry i mean prime Factorization
frx
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Do you know what a primenumber is?
khatyjee
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no
khatyjee
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i don't no
khatyjee
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can u show me how to find it?
khatyjee
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I have a test on monday.
frx
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Well, a prime number is a number which is only divisble by 1 and itself. For example no number other than 1 and 3 divides 3. No numer divides 11 execept 1 and 11, try it out and you will se that is not divisible by any other number.
frx
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The prime numbers you have to learn is 2,3,5,7,11,13
khatyjee
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yes it's divaisable by 1,2,5,25
khatyjee
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okay
frx
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Then when they want you to factorize by prime numbers you have to find the prime numbers which the number they given you are built from
frx
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Take 10 for example it's prime factorization is 2*5 since both 2 and 5 are prime
frx
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The easiest way is to use a "primetree"
khatyjee
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you mean this |dw:1350154821062:dw|
frx
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|dw:1350154793229:dw|
khatyjee
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is that the answer
the answer is 2.5.5.5
frx
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The answer is indeed 2*5*5*5
frx
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The easiest way to do this is start by testing if 250 is diviseble by 2, and in this case it is then you have 2* 125, right?
frx
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Since 2 is a prime number you have found what you where searching for so you continue with 125
frx
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You do the same, is 125 divisible by 2?
khatyjee
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no
frx
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So then you go on to the next prime number 3, is 125 divisible by 3?
khatyjee
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no it divisible by 3
khatyjee
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by 5
frx
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Exactly, so then you have 25 left, and as you probobly know 25 is 5*5, so you've got that 2*5*5*5=250
frx
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Do you get the idea?