There is a logical pattern to the following series of numbers. What are the next three numbers in the series?

15 21 25 27 33 35 39 ...

 

I got 45, 45, 51, a progression of odd-multiples of 3, with an intermittent multiple of 5 every three numbers...

3*5, 3*7, 5*5... 3*9, 3*11, 5*7... 3*13, 3*15, 5*9... 3*15, 3*17, 5*11, etc

Posted by Jenny on 2005-06-21 02:06:46