Brainteaser Puzzles | Mind Teaser | Math Logic

Other interesting Brainteaser

Oct 7, 2007

Surprising Memory (Just Playing Around)

An easy way to surprise your friends will be for you to memorize the following calculations:

1x9+2=11

12x9+3=111

123x9+4=1111

1234x9+5=11111

12345x9+6=111111

123456x9+7=1111111

1234567x9+8=11111111

12345678x9+9=111111111

Or:

9x9+7=88

98x9+6=888

987x9+5=8888

9876x9+4=88888

98765x9+3=888888

987654x9+2=8888888

9876543x9+1=88888888

98765432x9+0=888888888

Guessing The Number (Just Playing Around)

Here’s a trick that will make your friends think you can guess any number they think of.

-Choose a number between 0 and 50 and write it down on a piece of paper. Fold the paper and give it to a friend who mustn’t look at it.

-Ask your friend to choose a number between 50 and 100. He mustn’t let you know what it is.

-Subtract the number you had chosen (and written on the piece of paper) from 99.

-Ask your friend to add the result you get to the number he chose.

-He must then take off the first digit on the left and add it to the number.

-Then, ask him to subtract this number from the one he had originally chosen.

The resulting number will be the one you had written on the paper at the very beginning!

Small Village (Logic Brainteaser Puzzle)

I live in a very small village where many people are related to each other. For example Tom, Dick and Harry are garage owner, vicar and solicitor but not in that order. Tom is the vicar’s father-in-law and Dick is the solicitor’s son-in-law. Everyone was at the church last Saturday when Harry married the garage owner’s daughter. Who does which job? (By the way, the people are very moral in our village, so none of the three has been married more than once.)

Again, in order to make it more interesting, I am not giving the answer or the clue straight, and this one is pretty tough. Please try to give your answer in the comment box at my blog or by email, I’ll check it out as soon as possible, and I’ll give the clue and the answer eventually. Thx guys!!

The Pawnbroker (Logic Brainteaser Puzzle)

As I reached the ticket office I realized I had no cash, only a $10 postal order. The fare to Cambridge was $7 and the booking clerk would not accept my postal order. Luckily there was a pawnbroker nearby, so I went in and pawned my postal order for $7. On my way back into the station, I met Patrick, a friend of mine, who offered to buy the pawn ticket from me for $7, to save me the trouble of coming back to London. Naturally I agreed, then rushed in and bought my ticket. When I got to Cambridge I still had $7 of course.

So who lost?

Clue: If the man who travelled to Cambridge had been able to use his $10, he would have had $3 left after deducting the fare. Instead he has $7. So $4 has come from somewhere. In order to redeem the postal order, someone will have to pay the pawnbroker back his $7..

Answer: Patrick is the loser.

BrainBashers