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  2. 30 Math Puzzles (with Answers) to Test Your Smarts - AOL

    www.aol.com/30-math-puzzles-answers-test...

    They’re arranged in groups of two-digit numbers; you add eight to the top two-digit number (75, 34, 68) to get the bottom number (83, 42, 76). Keeping score Math puzzle

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  5. Killer sudoku - Wikipedia

    en.wikipedia.org/wiki/Killer_Sudoku

    Adding together a number ending in 7 and a number ending in 8 always results in a number ending in 5, for example. So, for example, 1 7 + 1 8 = 3 5 becomes, in clock arithmetic, 7 + 8 = 5. The biggest number an 'innie' or 'outie' can hold is 9, so adding or subtracting that value will change the last digit of the total in a way that no other ...

  6. 24 (puzzle) - Wikipedia

    en.wikipedia.org/wiki/24_(puzzle)

    The original version of 24 is played with an ordinary deck of playing cards with all the face cards removed. The aces are taken to have the value 1 and the basic game proceeds by having 4 cards dealt and the first player that can achieve the number 24 exactly using only allowed operations (addition, subtraction, multiplication, division, and parentheses) wins the hand.

  7. The Hardest Logic Puzzle Ever - Wikipedia

    en.wikipedia.org/wiki/The_Hardest_Logic_Puzzle_Ever

    A visitor to the island must ask a number of yes/no questions in order to discover what he needs to know (the specifics of which vary between different versions of the puzzle). One version of these puzzles was popularized by a scene in the 1986 fantasy film Labyrinth. There are two doors, each with one guard.

  8. Hidato - Wikipedia

    en.wikipedia.org/wiki/Hidato

    Numbrix puzzles, which appear in Parade magazine, are similar to Hidato except diagonal moves are not allowed. [9] (vos Savant has only used 7×7 and 9×9 grids). [10]Jadium puzzles (formerly Snakepit puzzles), created by Jeff Marchant, are a more difficult version of Numbrix with fewer given numbers and have appeared on the Parade web site regularly since 2014, along with a daily online ...

  9. Trick or Treat Yo'self With These 19 Free Printable ... - AOL

    www.aol.com/trick-treat-yoself-19-free-224832976...

    19 Free Printable Halloween Word Search Puzzles. iStock. This 10-letter puzzle features some scary Halloween words set against a purple cat background. Related: ...

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