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What numbers should appear in the last box?

Here’s something a little more hands-on:

the six pencils puzzle

six pencils puzzle dudney

answers can be submitted in comment section below (although Six Pencil solution is available on Puzzles.com), and will be unmasked Monday. Have a good weekend.

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25 Responses to “IQ test type question, and Pencil Puzzle”

  1. Kalvin | Profile (beta)

    numbers puzzle:

    4 I 14
    16I 7


  2. yash_opened | Profile (beta)

    top left square- 4
    top right square- 14
    bottom left square- 16
    dude this was easy


  3. Shawn | Profile (beta)

    How about:
    4 14
    16 7

    upper right is 2x lower right
    lower left is upper right +2
    upper left is lower right /4

    There are several other possible solutions, but I like this one; it seems to fit the best.


  4. michaelc | Profile (beta)

    Number box is easy enough.

    4 14
    16 7


  5. Bobo The Bear | Profile (beta)

    The numbers are:

    Upper left (UL) = 4
    Upper right (UR) = 14
    Lower left (LL) = 16
    Lower right (LR) = 7 (given)

    The rules that apply to each square are:

    LR * 2 = UR
    UR + 2 = LL
    LL / 4 = UL


  6. suineg | Profile (beta)

    Nice, an IQ question, I will try:
    I think its like this:(from left to right)
    first square: “9″X4=36-2=”34″/2=”17″
    second square: “7″X4=”28″-2=”26″/2=”13″
    ? square: “4″X4=”16″-2=”14″/2=”7″

    so (? square) will be like this:
    4…14
    16..7


  7. LaDana | Profile (beta)

    4 14
    16 7

    The theory being:
    Box 2 = Box 4 * 2
    Box 3 = Box 2 + 2
    Box 1 = 1/4 Box 3


  8. aetrac | Profile (beta)

    Top Left: 4
    Top Right: 14
    Bottom Left: 16


  9. shaks | Profile (beta)

    from topleft to bottomleft to topright to bottomright, the pattern is “mutiply by 4, subtract 2, then divide by 2″

    working backwards from 7 therefore, i get “4; 16; 14; 7″

    (7×2=14, 14+2=16, 16/4=4)


  10. sarag | Profile (beta)

    Re the number box:
    Where the 9 and 7 are : 5
    Clockwise from there : 18, 9, 20

    9-2=7-2=5 If a=5,
    clockwise: 4a-2, 2a-1, 4a


  11. Adelaide93 | Profile (beta)

    To do it with six pencils, you make an arrow head with three pencils and with the middle pencil a little lower so all three pencils touch each other. Then place another arrow head across it so all touch.

    To do it with seven pencils, make a tall thin triangle one pencil-width apart at the bottom. The pencil at the base overlaps at both ends. Then make another triangle (equilateral, and each pencil overlapping at the corners by about an inch) - also flat but resting on the first one. Put a pencil from each end of the base pencil towards the top of the first triangle- overlapping at the top so they all touch. Then the third one so that it rests on the first triangle’s base, but a bit skew and crossing it where the other two pencil’s are. Then in the little pencil-width gap, slide the last pencil, so that its other end rests on the intersection at the top of the second triangle.


  12. Spiky216 | Profile (beta)

    The first box goes like: (*2)-1 = 17, *2 = 34, +2 = 36
    The second box : (*2)-1 = 13, *2 = 26, +2 = 28
    Then The Third is : (4*2)-1 = , 7*2 = 14, 14+2 =16
    4, 14, 16


  13. jasc | Profile (beta)

    4,14,16


  14. mfeex | Profile (beta)

    4,16,14


  15. hex | Profile (beta)

    IQ test:
    17×2=34
    34+2=36
    36/4=9

    13×2=26
    26+2=28
    28/4=7

    7×2=14
    14+2=16
    16/4=4

    Numbers are 7, 14, 16, and 4


  16. da Moose | Profile (beta)

    The numbers in the last square should read:

    4, 14
    16, 7


  17. Ari | Profile (beta)

    4 14
    16 7


  18. NitzOO | Profile (beta)

    Up left: 5
    Down left: 20
    Up right: 18
    Down right: 9


  19. Sue | Profile (beta)

    Top Row (l-r): 5, 14
    Bottome row: 20


  20. sebbie3000 | Profile (beta)

    I’m probably way off base with this (and I’ll kick myself when I see the answer!), but I’m guessing at these: (from top left) 3; 16; 18.


  21. sarag | Profile (beta)

    my answer above was given when i thought the 3rd square was ALL blank. for some reson i didn’t see the 7.

    sorry….


  22. RK | Profile (beta)

    answer:

    4 14
    17 7


  23. LaDana | Profile (beta)

    RK,

    Could you explain 4,14,17,7?

    Thanks


  24. michaelc | Profile (beta)

    RK,

    It looks like your answer is a typo. If not, can you explain it?


  25. RK | Profile (beta)

    oops!
    4 14
    16 7


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