Friday

March 6, 2015

March 6, 2015

Posted by **karen** on Tuesday, February 23, 2010 at 7:59pm.

- math -
**MathMate**, Tuesday, February 23, 2010 at 8:35pmIf it has exactly 9 factors, it must be a perfect square, as only perfect squares have an odd number of factors (including 1 and the number itself).

Between 20 and 50, there are 3 perfect squares, only one of which has more than three factors.

Post if further help is required.

**Answer this Question**

**Related Questions**

MATH HELP - Eduardo thinks of a number between 1 and 20 that has exactly 5 ...

math - Eduardo thinks of a number between 1 and 20 that has exactly 5 factors. ...

math - Eduardo thinks of a number between 1 and 20 that has exactly 5 factors . ...

math problem solving - Eduardo thinks of a number between 1 and 20 that has ...

math - I'm thinking of a number made from the digits 3,6 and 9. Each digit is ...

math - what if Julie is thinking of an even number between 12 and 29 with digits...

math - julie is thinking of an even number between 12 and 29 with digits whose ...

math - What if Julie is thinking of an even number between 12 and 29with digits ...

Math 5th grade - Can you help me solve the problem? Use number bank to solve. ...

math - I am a prime number. I am less than 40. I am 1 more than a multiple of 5...