February 24, 2017

Homework Help: Math

Posted by Sahana on Friday, November 26, 2010 at 5:42pm.

Hi. I found this question on a Math Counts practice test and it seriously confused me. I've never learned about this, and it would help if someone helped me. Thanks in advance.

How many elements are in the intersection of the set of all the prime numbers less than 30 and the set of all the odd numbers greater than zero?

1. I don't even understand the question.
2. What does the question mean by elements?
3. Pleas don't just give me the answer, because I really want to know how to solve these types of questions in case it appears later on.

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