( CNN ) -- Answers to the quiz are in bold . 1 . What is the 5-digit number in which the first , third and last digits are the same , the first digit is four less than the second , the last is four less than the fourth and the second and fourth are the same ? ( Hint : The sum of all the digits is 33 . ) 59,595 . 2 . Boris Smetana and Karl Smith were world-class chess champions . In one series of matches , each won every game . How ? They were not playing each other . 3 . Nicole was sure she got the right answer when her botany teacher asked her to pick out the plant that was not a tree from the list below . Which one would you choose ? Peach , plum , walnut , linden , banana Banana . 4 . Six bricklayers can lay 24 bricks in half an hour . How many bricks can 12 bricklayers lay in two hours ? 192 ( Each bricklayer lays four bricks in half an hour , or eight bricks in an hour . That is 16 bricks in two hours times 12 bricklayers who can lay 16 bricks each . ) 5 . What is the number that is one more than one-tenth of one-fifth of one-half of 4,000 ? 41 . ( 4,000/2 = 2,000 , /5=400 , /10=40 , +1=41 ) 6 . In a pie-eating contest , Alice was neither first nor last , but she beat Evan . Ben beat Alice . Carol beat Dan who beat Ben . Who was last ? Evan . 7 . What letter would logically complete the series below ? A Z B Y C X D W E ? V ( There are two series : A to E forward and Z , Y , X , W backward ) 8 . Jim had a small baseball card collection . All but five were signed , all but five were rookie cards , and all but five were less than 10 years old . What is the minimum number of cards he could have had ? 6 . 9 . Start with the number of lives a cat reputedly has , multiply by the number of stitches saved by a stitch in time and add 10 . What is the answer ? 91 . ( 9x9=81+10 ) 10 . What is the 11-letter word that all smart people spell incorrectly ? Incorrectly . Scoring : 9-10 : Mensa material ! Try to join 7-8 : Good chance you 'll qualify for Mensa 5-6 : Not bad , you might make Mensa Below 5 : You must have had a bad day .
See the answers to an informal question designed by Mensa . If you get 8 of the 10 questions right , you may be Mensa member . Click here for the questions .