puzzle 1
puzzle 1
Cross The Bridge
Four boys want to cross a typical indian bridge. The typical indian bridge because it can carry only two people at a time. They have a battery which can light up17 minutes only. Mandar takes 1 minute to cross the bridge, Vikram takes 2 minutes to cross the bridge, Nandakishore takes 5 minutes to cross the bridge while Chinmay requires 10 minutes for crossing the same bridge. Can you help them to cross the bridge?
puzzle 2
The Five Newsboys |
| Five clever newsboys formed a partnership and disposed of their papers in the following manner. Tom Smith sold one paper more than one quarter of the whole lot. Billy Jones disposed of one paper more than a quarter of the remainder. Ned Smith sold one paper more than a quarter of what was left, and Charley Jones disposed of one paper more than a quarter of the remainder. At this stage the Smith boys had together sold just one hundred papers more than the Jones boys had sold. Little Jimmy Jones, the youngest kid in the bunch, now sold all the papers that were left. The three Jones boys sold more papers than the two Smith boys, but how many more? |
puzzle 3
After school you work at the local greasy spoon waiting on tables. At the end of a particularly long shift, another waiter challenges you to a variation of "Don't Tip The Waiter."
He proposes the following game:
Each of you will take turns placing plates on a clean table. All the plates must be the same size, lie flat on the table, and no plate may overlap another. The first person who is unable to place another plate on the table without it falling off or moving another place must wash the dishes for the next week.
The table is a perfect circle, with a five foot diameter. Each plate is also a perfect circle with a ten inch diameter.
If you are given the choice of going first or second, which do you choose, and what will your strategy be?
puzzle 4
There four boxes on the stage, each with a stack of brand new one dollar bills inside. Before the game starts, you don't know how much money is in each, or even what the range of values is. You do know that no two boxes have the same size stack.
The host will let you open the boxes, one at a time, in whatever order you wish and examine the stack inside. You may then choose (above the inane hooting of the audience) to take the visible stack or open another box.
Once passed, you may not return to a previous stack; e.g., if upon seeing the first stack you decide to open the second box, you may not then opt for the first stack. If you pass the first three boxes, the fourth stack will automatically be your choice.
Now here's the catch: You only get to keep the money in the box you chose if it turns out to be, in fact, the Fattest Stack (hence the name of the game).
Can you beat the odds with this game? Or is blind guessing just as good a system as any?
Assume that you can tell whether one stack is bigger than another just from observation.
puzzle 5
| During the Turkish stampede in Thrace, a small
detachment found itself confronted by a wide and deep
river. However, they discovered a boat in which two
children were rowing about. It was so small that it would
only carry the two children, or one grown person.. How did the officer get himself and his 357 soldiers across the river and leave the two children finally in joint possession of their boat? And how many times need the boat pass from shore to shore? |