What comes next in this sequence?
5 8 26 48 122 ?
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, September 14, 2009
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ReplyDeleteOoops, make a mistake on the first guess. I'm saying it's 168.
ReplyDelete340
ReplyDeleteJunk Logic: 5+8=13
ReplyDelete13x2=26
48+122=170
170x2=340
Looks like there were some different patterns here.
ReplyDeleteI was going for consecutive primes squared. Then you add or subtract 1 from the answer. So:
2^2 + 1 = 5.
3^2 - 1 = 8.
5^2 + 1 = 26.
7^2 - 1 = 48.
11^2 + 1 = 122.
13^2 - 1 = 168