SOLUTION: How many prime numbers are there whose squares are less than 250? And please could you explain how you got your answer? I tried finding the number that has a square root of 250 and

Algebra ->  Divisibility and Prime Numbers -> SOLUTION: How many prime numbers are there whose squares are less than 250? And please could you explain how you got your answer? I tried finding the number that has a square root of 250 and      Log On


   

Question 637673: How many prime numbers are there whose squares are less than 250? And please could you explain how you got your answer? I tried finding the number that has a square root of 250 and finding all the prime numbers less then that but that didn't work. I have no other idea what to do to solve this problem. Please help me.
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
 

Hi,

How many prime numbers are there whose squares are less than 250? 6

Making a table is Useful:

P	P^2

2	4

3	9

5	25

7	49

11	121

13	169

17	289