Brain Teasers

  • Question for the Week of Apr. 13-17
    Find a number less than 100 that is increased by 1/5 of its value when its digits are reversed.


    Question for the Week of Mar. 30-Apr. 1
    Name four days of the week that start with the letter "t".


    Question for the Week of Mar. 9-13
    You walk across a bridge and you see a boat full of people yet there isn't a single person on board. How is that possible?


    Question for the Week of Feb. 23-27
    There are 5 houses on a street: house A, B, C, D, and E. The distance between any two adjacent houses is 100 feet. There are 2 children living in house A, 3 children living in house B, 4 children living in house C, 5 children living in house D, and 6 children living in house E. If the school bus can only make one stop on that street, in front of which house should the bus stop so that the sum of the walking distance among all children will be the least?
    (Hint: Read the question carefully and illustrate if needed)


    Question for the Week of Feb. 9-13
    Two mothers and two daughters went out to eat, everyone ate one burger, yet only three burgers were eaten in all. How is this possible?
    (Hint: Read the question carefully and illustrate if needed)


    Question for the Week of Feb. 2-6
    It's a stormy night and a plane takes off from JFK airport in New York. The storm worsens, and the plane crashes - half lands in the United States, the other half lands in Canada. In which country do you bury the survivors?

    Question for the Week of Jan. 19-23
    What number comes next in the following sequence and explain how you solved it? 2  4  8  10  20  __

    Question for the Week of Jan. 12-16
    A cowboy rides into town on Friday, stays for three days, then leaves on Friday. How did he do it?

    Question for the Week of Jan. 5-9
    How many times can you subtract the number two from the number fifty?



    Question for the Week of Dec. 15-19

    In a one-story pink house, there was a pink person, a pink cat, a pink fish, a pink computer, a pink chair, a pink table, a pink telephone, a pink shower-everything was pink! What color were the stairs?



    Friday Math Questions:

    Question #1:

    If Mr. Lindsay buys a baseball bat and a ball for $1.10 combined. If the bat costs $1.00 more than the ball, how much does the ball cost alone?



    Question #2:

    Three guests check into a hotel room. The clerk says the bill is $30, so each guest pays $10. Later the clerk realizes the bill should only be $25. To rectify this, he gives the bellhop $5 to return to the guests. On the way to the room, the bellhop realizes that he cannot divide the money equally. As the guests didn't know the total of the revised bill, the bellhop decides to just give each guest $1 and keep $2 as a tip for himself. Each guest got $1 back: so now each guest only paid $9; bringing the total paid to $27. The bellhop has $2. And $27 + $2 = $29 so, if the guests originally handed over $30, what happened to the remaining $1?