| |
You are here: Experts > Science > Math for Kids > Basic Math > math question
Expert: Lynn Houston - 8/29/2008
Question
what type of number has an odd number of factors? give examples
Answer
Well, it can't be prime because prime numbers always have two factors, 1 and the number itself. The only numbers that have an odd number of factors are perfect squares. 4, 9, 16, 25, etc. For example numbers that multiply to 4 are 1*4 and 2*2, so, the number of factors is odd, 1, 2 & 4. Multiples of 9 are 1*9 and 3*3, factors equal 1,3 and 9. All other numbers will have an even number of factors.
Add to this Answer
Ask a Question
|
|
