If we list all the natural numbers below 10 that are multiples of 3 or 5, we get 3, 5, 6 and 9. The sum of these multiples is 23. Finish the solution so that it returns the sum of all the multiples of ...

The game will give you a rando word to guess, and the player has to guess the letters in order to unscramble it. The game will tell you if your guessed letter is wrong, and also give you a hint about ...

Among many of the Tsimane’ people, who live in a remote region of the Bolivian rainforest, numbers do not play an important role in their lives, and people living in this society vary widely in how ...

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Eagleman’s so-called VEST, whose name comes from the futuristic-sounding “variable extrasensory transducer”, is a sleeveless top equipped with vibrating nodes that buzz information on to the wearer’s ...

What do you think of when you see that number? A nickel? Five fingers? How about 5-to-4? What comes to mind? A Supreme Court decision? A baseball score? What if the number is bigger, say 313? Can you ...

Q. Thanks for your advice in the September 2001 issue on converting fractions in Excel into decimal values. But how about those of us who need to do the reverse—that is, convert decimal values into ...