Q1: A woman shoots her husband. Then she holds him underwater for over 10 minutes. Finally, she hangs him. But 10 minutes later, they both go out and enjoy a wonderful dinner together. How can this be?
Answer: She is taking and developing a photograph of her husband.
Q2: There are three switches outside of a closed room to operate three different light bulb inside the room. You can only go into the room once and you need to determine which switch belongs to which bulb. Just to make it clear, room is perfectly locked and it's not possible to determine whether lights are on from outside the room.
Answer: Switch ON any one of the three and leave it ON for a minute then switch it OFF. Light one of the two switches left and go inside the room. The one lighted is (of course) the switch which was left on. Now by touching the rest of the two, the one which is warm is the switch which was turned on and then turned off. Left one is the third!
Q3: How many months during this year can have twenty eight days ?
Answer: All (all months have twenty eight days at least)
Q4: You are driving along in your car on a wild, stormy night, it’s raining heavily, when suddenly you pass by a bus stop, and you see three people waiting for a bus:1. An old lady who looks as if she is about to die.2. An old friend who once saved your life.3. The perfect partner you have been dreaming about.Which one would you choose to offer a ride to, knowing very well that there could only be one passenger in your car?
Answer: I would give the car keys to my Old friend and let him take the lady to the hospital. I would stay behind and wait for the bus with the partner of my dreams
Q5: You have a 5 liter Jug and a 3 liter Jug and Free supply of water. You need to measure exactly 4 liter of water but there is no measuring instrument or cup. Also Jugs are oddly shaped and doesn't contain any mark.
Answer: Use the 5 LITERS TO fill d 3 Liters, it will now remain 2 liters in d 5 Liters Jug. Den do away wit d water in the 3 Liters Jug. Then fill d 3 liters jug wit d remaining 2 liters water in the 5 liters jug. Fill d 5 litters again with water, then use it to fill the 3 Liters jug that already has 2 liters to make it 3 liters. Then the 5 Liters Jug will now have 4 Liters remaining.
Q6: On a sunny day, two fathers and two sons decided to go fishing. After an hour, each one of them was able to catch 1 fish. Then, they returned home and placed all the three fishes in a vessel.
How come they had only three fishes in total? If No fish was lost or eaten by them.
Answer: Actually there were only three people who went on fishing – a son, a father and a grandfather. They can obviously be denoted as two fathers and two sons.
Q7: Ramesh and Suresh are playing lawn tennis together. They decide to play a set of three. After the sets, both of them win each three sets. How is this possible?
Answer: Well, this is possible. They were playing as a team in doubles match against other team.
Q8: A taxi driver was going the wrong way on a one-way road. A traffic police officer noticed him but instead of stopping him or fine him, he let the driver go.
Answer: The question tells us that a taxi driver was going the wrong way. It is however not mentioned that he was driving the cab. As per the question, it is evident that he was on foot and that is why the police officer did not find him.
Q9: You have 5 Jars filled with marbles. Each marble weighs 10 gm, except one Jar which contains defective marbles which weighs 9 gm. Given a scale to weigh, How do you find Jar with defective marbles in just one measurement. Here scale is modern day electronic scale to measure weight.
Answer: Take 5 pills from jar 1, 4 pills from jar2,.... and 1 pill from jar 5 and put altogether in the scale. the ideal weight should be (1+2+3+4+5)x10= 150gms. for eg if the jar2 is contaminated then the weight will be 146 gms. so depending on the amount of weight loss we can identify the contaminated jar.
Q10: A person's age is many days as his father's age in weeks and as many month as his grand father's age in years. If you combine age of all three it comes 120 years. What is the age of all three?
Answer: let grandson is x yrs old=12x months=12x*30 days=360x days
The grandfather's age is equal to the number of months of the grandson
so age of grandfather=12x yrs
The father's age in weeks is equivalent to the grandsons age in days
so father's age in weeks=360x
so father's age in yrs=360x/52=90x/13
The 3 together are 140 years old
so x+12x+90x/13=140
or 13x+156x+90x=140*13=1820
or 259x=1820
or x=7.02=7 yrs
so age of grandfather=12x yrs=12*7=84 yrs
so father's age in yrs=360x/52=90x/13=90*7/13=48.46=49 yrs
the individual ages of the 3 are 7,49,84
we have taken 1 yr=12 months
1 month =30 days
1yr=52weeks
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