SOLUTION: How many prime numbers are there between -4 and 20 on the number line?

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Question 323869: How many prime numbers are there between -4 and 20 on the number line?
Answer by solver91311(24713) About Me  (Show Source):
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By definition the smallest prime is 2. Hence none of the negative integers on the interval are prime, nor are the integers 0 and 1. Therefore, by enumeration the primes less than 20 are:



You can count them as well as I can.


John