Choose an integer from 0 to 15
(inclusive of 0 and 15). You ask me 7 yes/no questions, I answer them
all. I am allowed to lie once (I don't have to lie that once but I am
allowed to). Determine the number I am thinking of and tell me how to
Gold coin weighs one gram, counterfeit
coin weighs 1.1 grams. You have 10 bags full of coins, nine of the
bags are full of real gold but one bag is full of the counterfeit
coins. Given a perfect scale (a pointer scale, for example) and ONE
weighing can you determine which bag has counterfeit coins? If so how?
I have a math puzzle that I just
You have 4 people (A, B, C and D) that need to cross a bridge under 13
min and only 1 flashlight. You can only go with the flashlight, no
more than 2 persons at a time, and always as fast as the slowest
person. To cross the bridge persons need:
A=1min; B=2min; C=5min; D=6min.
How do you get all 4 of the across in only 13 min?
P.S. they can't go on each others back!
You have three bears and three humans.
The bears and humans have to take a boat from one island to another
island. One bear is a special bear who can drive the boat. The boat
can hold no more than two - 2 bears, or 2 humans, or 1 bear plus 1
human. There can never be more bears than humans on either island or
the human will be killed. How can this be done?
I was wondering if you can help me
solve this puzzle:
Grandfather is a very hard-boiled customer. In fact, his eggs must be
boiled for exactly 15 minutes, no more, no less. One day he asks you
to prepare breakfast for him, and the only timepieces in the house are
two hourglasses. The larger hourglass takes 11 minutes for all the
sand to descend; the smaller takes 7 minutes. What do you do?
...Grandfather grows impatient...
Here is a puzzle that I am stuck on
and cant figure out... My friends and I have tryed to come up the
solution and how you get the solution but it is creating more
difficulty... Can u please help me with it... what number fits into
the circle: carefully look at the connecting lines...
A man leaves office daily at 7pm. A
driver with car comes from his home to pick him from office and bring
back home. One day he gets free at 5:30 and instead of waiting for driver he
starts walking towards home. In the way he meets the car and returns
home on car. He reaches home 20 minutes earlier than usual.
In how much time does the man reach home usually??