Basics & Puzzles

Raj is hungry and he wants to cook Maggi. He saw TV advertisement that we can cook maggi in 2 minutes. He have two sand hourglass, one that measures 7 minutes and other measures 4 minutes.  Using these two hourglass how he can measure exactly 2 minutes to have maggi ?

The average age of 10 members of a committee is the same  as it was 4 years ago, because an old member has been  replaced by a young member. Find how much younger is  the new member ?

A person drives with constant speed and after some time he sees a  milestone with 2 digits. Then travels for 1 hour and sees the same 2  digits in reverse order. 1 hour later he sees that the milestone  has the same first 2 digits with a 0 between them. What is the speed of  the car? 

We have ten sacks and each of sack having 1000 coins. Each coin weighs 10 grams. One of sack is having faulty coins whose weight is 11 grams. We have to find out faulty sack. We can use weigh machine only one time. How to find faulty sack ?

The image shows a huge Bengal Tiger standing in a bamboo forest.  Your mission is to look for "The Hidden Tiger" in the image below.

Two classmates Ram and Shyam met in a street after many years.  The following is part of their discussion. Ram: Yes, I'm married and have three wounderful children. Shyam: That's great! How old are they? Ram: Well, the product of their ages is 36. Shyam: Hmm. That doesn't tell me enough. Give me another clue. Ram: OK. the sum of their ages is the number on that shop  across the street.. Shyam: (After a few minutes of thinking) Ah ha! I've almost got it but I still need another clue. Ram: Very well. The oldest one has red hair. Shyam: I've got it! What were the ages of the children of Ram?

You are a crime investigation officer breaks into a crime  scene. The victim is the owner   who is  slumped dead on a  chair and have a bullet hole in his head. A gun lies on the  floor and a cassette recorder is found  on the table.   On pressing the play button, You hears the message   'I have committed sins in my life and now I offer my soul to  the great lord'....following a gunshot.   What do you think is it a Murder or Suicide ? Answer with  valid reason. 

You are the king of Royal empire and you are about to have a private party tomorrow. The party is the most important party you have ever hosted. You've got 100 bottles of wine you were planning to open for the celebration, but you find out that one of them is poisoned. The poison exhibits no symptoms until death. Death occurs within ten to twenty hours after consuming even the minutest amount of poison. You have over a thousand slaves at your disposal and just under 24 hours to determine which single bottle is poisoned. You have a handful of prisoners about to be executed, and it would mar your celebration to have anyone else killed. What is the smallest number of prisoners you must have to drink from the bottles to be absolutely sure to find the poisoned bottle within 24 hours?

In 1872, Twin sisters born in famous city of India.  Due to some circumstances, their is diffrence of 10 hours in their birth time. Elder sister is Alisha and younger one is Nisha. Alisha bought a box on her 20th birthday. she puts 2500 rupees on every birthday and Nisha takes out 500 rupees from the box on her birthday. Alisha died at age of 60 and t hen the box was opened there were 2500 remaining in the box. Hows this possible ?

Arrange the alphabets 'A' to 'H' in the grid below such that adjacent characters are not in adjacent boxes (horizontally, vertically, or diagonally).  (A,B,C,D,E,F,G,H) Note: Multiple solutions are possible.

Eight software engineers are sipping coffee at cafe coffee day. They wish to compute their average salary. However, nobody is willing to reveal  information about his/her own salary to anybody else and they can not ask salary directly/indirectly to any other employee. How do they do it?

Find the Parking number space containing the car: Click for Hint: If Players hits 6 sixes in 6 balls, He won't be able to play first ball of next over.

How many runs a single player can score in One day match (50 overs/ 300 balls), assuming he played all balls. No 'no balls', no wides, no extras, no over throws, So how much runs he can score max ?  Click for Hint: If Players hits 6 sixes in 6 balls, He won't be able to play first ball of next over.

A King tells his two sons to race their horses to a distant city to see who will inherit his fortune. The one whose horse is slower wins. After too much of thinking, they went to Birbal to take his guidance on how to win the race. Birbal gave them advice and it solves the problem for brothers. find out the advice which solve the problem ? Click for Hint: After Birbal's advice, They jump on the horses and race to the city as fast as they can

Input                        Output 2     3    2                   5   13   14   1                  14  14    5    9                  464 Find the logic behind the output.

Ram, Raj, and Shyam visited their mother yesterday. One of them was suspected to eat pastries from the refrigerator. The three brothers made the following statements: Ram: I'm innocent. Raj: I'm innocent. Shyam: Raj is the guilty one. If only  one  of these statements was true, who ate the pastries?

I give you 4 tablets which contain 2  for fever and 2 for cold..all 4 have  same size, shape, taste, weight and color, No cover.  You have to take 1 cold and 1 fever  tablet right now..How will you choose  correctly??? Click for Hint: 1/2 + 1/2 = 1

There are three switch buttons outside a room. Two of them are faulty and only one works to switch on the bulb in the room. Room is closed from a the side and there is no way to see inside when the door is closed.  How to know the correct switch by entering the room only once . Click for Hint: Use body senses.

You are given 2 ropes and lighter. Each of 2 ropes has following property if u light 1 end it will take 1 hr to burn other end. Its doesn't necessarily burn at uniform rate .  How can u measure a period of 45min...?

Three prisoners and five hats (supposedly two black and three white) are involved. The three prisoners are ordered to stand in a straight line facing the front, with C in front and A at the back. They are told that there will be two black hats and three white hats. One hat is then put on each prisoner's head; each prisoner can only see the hats of the people in front of him and not on his own. The first prisoner that is able to announce the color of his hat correctly will be released. No communication between the prisoners is allowed. Who will announce first....? He first asks Prisoner C, "What is the color of the hat on your head?" Prisoner C thinks for a short while and then replies, "I'm sorry, I do not know." He then asks Prisoner B, "What is the color of the hat on your head?" Prisoner B thinks for a short while and then also replies, "I'm sorry, I do not know." He finally asks Prisoner A, "What is the color of t

Sometimes the name of a country is hiding in the consecutive letters within a sentence. For example, FRANCE is hiding in, "The runners who lived at the top of the cliff ran centuries ago"(clifF RAN CEenturies). Find the name of the country hiding in the   letters within these sentences. 1. You all must pay it back, or each of you will be in trouble.  2. Was Doctor Dolittle's favorite animal a glib yak?  3. A true optimist will never let hope rush away.  4. How often can a daydream come true?  5. Is there a health spa in this hotel?  6. They are going in diametrically opposite directions.  7. Is the county fair a nice place to visit?  8. The foot with which I lead is my left one.  9. He owns a ranch in Arizona.  10. The foods we deny ourselves are usually tasty.

3 Buckets 1 having apples, 1 having oranges and 1 having both apples n oranges.  all buckets having wrong stickers so without watching inside bucket.  How many minimum Fruits you pick to tell exactly which bucket contain what...? Click for Hint: All buckets have wrong stickers.

In HTML5, by using CSS3 we can rotate images on particular angle, and we can also set a time stamp for total duration to rotate the image.Click on image and it will rotate by 360 degrees. If you want to test this, You can enter particular angle in given text box and click on image to test. Please enter angle value (In degrees) Please enter time (In seconds)