Monday

December 22, 2014

December 22, 2014

Posted by **SHANA** on Tuesday, September 11, 2012 at 10:07pm.

- MATH -
**Jason**, Tuesday, September 11, 2012 at 10:18pmYou have to break 1260 down into it's number tree. Start by dividing the number by 2 until you can't do it evenly, then divide by 3, and so on until no more divisions can be made:

1260/2 = 630

So we have one prime factor, 2 and are left with 630:

630/2 = 315

Now we have two prime factors, 2 and 2. We are left with 315:

315/3 = 105

Now we have three prime factors - 2,2,3. We are left with 105:

105/3 = 35

Now we have four prime factors - 2,2,3,3. We are left with 35:

35/5 = 7

Now we have SIX prime factors - 2,2,3,3,5,7. Thus the sum of all the distinct, positive prime factors of 1260 are:

2+2+3+3+5+7 = 22

**Answer this Question**

**Related Questions**

Math - What is the sum of the prime factors of 1260? For example, the sum of the...

Math (algebra) - Let x,y be complex numbers satisfying x+y=a xy=b, where a and b...

math - For a positive integer x, let f(x) be the function which returns the ...

math - For a positive integer x, let f(x) be the function which returns the ...

Math (Complex Numbers) - Let N be the sum of all prime powers that can be ...

MATHS!!!Please HELP..:'( - What is the sum of all integer values of n satisfying...

algebra - For a positive integer x, let f(x) be the function which returns the ...

pcm - For positive integer x, let f(x) be the function which returns the number ...

math - what is the sum of the two least natural numbers that each have exactly ...

math please - what exactly is a prime factor would x-5 x+5 and x2+25 all be ...