Comments (10)

1. I guessed 22 but not using that logic. I think I need to start thinking deeper about these!

   posted by Katie Rose on 3-12-2010 at 8:56 am

2. Yep, same number. I figured it out when I said the numbers out loud

   posted by Sue on 3-12-2010 at 9:22 am

3. Since every third number increases by 7 could one contend that 28 is an acceptable answer?

   posted by JC on 3-12-2010 at 9:51 am

4. @JC, if you view it in groups of three, the pattern could be +1, +7. i think by that logic the next number would still be 22, and then the number after that would be 29.

   posted by JD on 3-12-2010 at 10:17 am

5. If the sequence (in sets of three) had been +2, +1, and +7, then the last “given” number would be 22 (20+2) instead of 21. So, close, but not quite.

   Nice thought, though!

   posted by Sandy Wood on 3-12-2010 at 10:47 am

6. If you take in consideration the fifference between consecutive number the pattern is 1,7,2,1,7,1,?
   Which I think would be 2 making the next # 23.

   Maybe I’m reaching a tad??

   posted by bo on 3-12-2010 at 2:18 pm

7. Nope, bo, that’s how I figured it as well.

   posted by Helenann on 3-12-2010 at 2:50 pm

8. oh. i thought it would be 23–two, three, a number with zero, twelve, thirteen, a number with zero, twenty-two, twenty-three. following a sequence of: 2-3-0-2-3-0-2-3

   posted by f. jeanne on 3-12-2010 at 5:58 pm

9. It would be helpful if you put a “…” after the question mark for the number to signify that the sequence doesn’t end there.

   posted by Tdl on 3-14-2010 at 5:32 pm

10. I actually took out a pen and pad and started to look for a pattern, but then it clicked!

    posted by Acacia on 3-16-2010 at 1:41 am

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