What number best continues the following series?
2 3 3 6 15 ...
I'm posting one puzzle, riddle, math, or statistical problem a day. Try to answer each one and post your answers in the comments section. I'll post the answer the next day. Even if you have the same answer as someone else, feel free to put up your answer, too!
Monday, March 10, 2008
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The series is based off the two numbers multiplied together, then subtract 3.
ReplyDeleteSo: 2*3 - 3 = 3
3*3 - 3 = 6
3*6 - 3 = 15
6*15 - 3 = 77
The last number is 77
Hi Mike, great website!!
ReplyDeleteThe answer to this particular puzzle should be 87 though?
6 * 15 - 3 = 87!
You're right. The correct answer is 87.
ReplyDeleteThanks! Too much math over the years, and now I can't deal with anything other than alpha and beta.