Monday, March 10, 2008

Complete the Series

What number best continues the following series?

2 3 3 6 15 ...


  1. The series is based off the two numbers multiplied together, then subtract 3.

    So: 2*3 - 3 = 3
    3*3 - 3 = 6
    3*6 - 3 = 15
    6*15 - 3 = 77

    The last number is 77

  2. Hi Mike, great website!!

    The answer to this particular puzzle should be 87 though?
    6 * 15 - 3 = 87!

  3. You're right. The correct answer is 87.

    Thanks! Too much math over the years, and now I can't deal with anything other than alpha and beta.


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