8th grade
posted by raluca .
write each number as the product of prime factors.
(a) 42__________________
(b) 110_________________
(c)...__________________
(d)...__________________
....
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42 = 2 * 21
Study this site for the rest of your assignment.
http://www.mathsisfun.com/primefactorization.html 
42=2*7*3.
Then I'd study that site.