Solve This Puzzles:

1. You are given two candles of equal size, which can burn 1 hour each. You have to measure 90 minutes with these candles. (There is no scale or clock). Also u r given a lighter.




2. Try the similar problem to measure 45 minutes.



3. How it is possible to place four points that are equidistance from each other?
OR
U r a landscape designer and your boss asked u to design a landscape such that you should place 4 trees equidistance from each other.
(Distance from each tree to the other must be same)



4. You are given a cake; one of its corner is broken. How will u cut the rest into Two equal parts?
5. How will you recognize the magnet & magnetic material & non-magnetic material?



6. If one tyre of a car suddenly gets stolen.... and after sometime u find the tyre
without the screws how will u make ur journey complete?



7. What is the height of room if after entering the room with a watch ur head
strikes a hanging bulb?



8. How will you measure height of building when you are at the top of the building? And if you have stone with you.



9. How wud u Catch and Receive a ball in same direction? (Dropping is from north And receiving from bottom not accepted, as it is 2 directions)



10. You have to draw 3 concentric circles with a line passing thru their center without lifting hand.




11. There are 9 coins. 8 are of 1 gm and 1 is of 2 grams. How will you find out the heavier coin in minimum number of weighing and how many weighing it will need?


12. A man has to get a fox, a chicken, and a sack of corn across a river.He has a rowboat, and it can only carry him and one other thing. If the fox and the chicken are left together, the fox will eat the chicken. If the chicken and the corn are left together, the chicken will eat the corn. How does the man do it?


13.If you have 5 quart and 3 quart pot, how would you measure exactly 4 quarts?


14.If you look at a clock and the time is 3:15. What is the angle between the hour and the minute hands? ( The answer to this is not zero!).





Answers For The Puzzles:

Ans: 1. First light up the two ends of the 1st candle(30 mins). When it will burn out light up one end of the second candle(60mins). (30+60=90)


Ans: 2. First light-up the two ends of the 1st candle(30 mins) and one end of the 2nd candle.
When the 1st candle will burn out ,then light up the both ends of the 2nd candle, as half of the candle is already burned, so (15mins) (15+30=45).


Ans: 3. Only 3 points can be equidistant from each other. But if u place points in the shape of a pyramid then its possible.



Ans: 4. Slice the cake


Ans: 5.Drag one piece of material over another. There is no attractive force in the middle portion of the magnet. OR
Get a piece of thread and tie up with the one bar and check for poles. If it iron bar then it moves freely and if it is magnetic bar then it fix in one direction according to poles.


Ans: 6.Open 3 screws, 1 from each tyre and fix the tyre.



Ans: 7.Oscillate the hanging bulb. Calculate the time period for one complete
oscillation by Simple Harmonic Motion (SHM) of the handing bulb. Put it in the
formula T=2 * 3.14 * (L/G)^1/2
L will be the length of the hanging thread.
Add the L with ur height to get the height of the room.


Ans: 8.Drop the stone and find the time taken for the stone to reach the ground. find height using the formula
s = a + gt ( s = height, a= initial velocity=0, g=9.8m/s, t = time taken)


Ans: 9. Catch and Receive are one and the same thing.....


Ans: 10. Start the line complete one circle move inside circles along the line and then draw second circle. Like wise rest.



Ans: 11. In 2 weighing
Divide the number of coins in three groups as A1A2A3,B1B2B3,C1C2C3,weight any two groups first. let us first weigh A Group & B group first, if they came to be equal then heavier coin is in C group, but if one of them came heavier thn hevier coin is in dat group, thn take any two coins from dat group, and weigh again, if both came equal thn the 3 one is ur hevier coin, if not thn one which came down is ur heavier coin.


Ans: 12. The man and the chicken cross the river, (the fox and corn are safe together), he leaves the chicken on the other side and goes back across.
The man then takes the fox across the river, and since he can't leave the fox and chicken together, he brings the chicken back.
Again, since the chicken and corn can't be left together, he leaves the chicken and he takes the corn across and leaves it with the fox. He then returns to pick up the chicken and heads across the river one last time.


Ans: 13. Fill 5 quarts pot and use that water to fill the 3 quarts pot. now there are 2 quarts in the 5 quart pot. repeat this twice to get 4 quarts.
If there is no extra pot available to hold these 2 quarts + 2 quarts, then the following is the solution.
Fill the 5 quart pot and pour it into the 3 quart pot. now there are 2 quarts remaining in the 5 quart pot. empty the 3 quart pot and pour these 2 quarts into the 3 quarts pot. now the 3 quart pot is 1 less to be filled up. now fill the 5 quarts pot and pour 1 quart into the 3 quarts pot to fill it. the 5 quarts pot has 4 quarts in it now.


Ans: 14. At 3:15 minute hand will be perfactly horizontal pointing towards 3. Whereas hour hand will be towards 4. Also, hour hand must have covered 1/4 of angle between 3 and 4.The angle between two adjacent digits is 360/12 = 30 degrees.Hence 1/4 of it is 7.5 degrees.