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Puzzle Competitions


Challenge yourself with this Mensa branded portable hand held game, featuring Standard, Vegas or Timer versions of Solitaire.

We have TWO to give away in our free online competition. To enter the contest simply solve the brain teaser and submit your answer by clicking on the link at the bottom of the page. Good luck!



What number should appear next in this sequence?


1    4    4    8    32    40    1280    ?


Please click here to enter




This competition closed on: 30 Sep 2013
01 Oct 2013
Reveal answer


Alternate between multiplying the numbers and adding them to give the next number.

(1x4=4, 4+4=8, 4x8=32, 8 +32=40, 32x40=1280, 1280+40=1320). 

A Hoggett, Country Durham and C Barnard, Hampshire