Question: You are given b boxes and n dollar bills. The money has to be sealed in the b boxes in a way such that without thereafter opening a box, you can give someone a requested whole amount of dollars from 0 to n. How should b be related to n for this to happen? [...]
My Tech Interviews
PREPARE FOR A TECHNICAL INTERVIEW
Browsing the archives for the interview tag
5 Mar 10
Chasing Dogs
Question: There are four dogs each at the corner of a unit square. Each of the dogs starts chasing the dog in the clockwise direction. They all run at the same speed and continuously change their direction accordingly so that they are always heading straight towards the other dog. How long does it take for [...]
2 Mar 10
Red and Blue Marbles
Question: You have 50 red marbles, 50 blue marbles and 2 jars. One of the jars is chosen at random and then one marble will be chosen from that jar at random. How would you maximize the chance of drawing a red marble? What is the probability of doing so? All 100 marbles should be [...]
1 Mar 10
The Fox and The Duck
Question: A duck that is being chased by a fox saves itself by sitting at the center of circular pond of radius r. The duck can fly from land but cannot fly from the water. Furthermore, the fox cannot swim. The fox is four times faster than the duck. Assuming that the duck and fox [...]
26 Feb 10
Burning Sticks
Question: You have two sticks and matchbox. Each stick takes exactly an hour to burn from one end to the other. The sticks are not identical and do not burn at a constant rate. As a result, two equal lengths of the stick would not necessarily burn in the same amount of time. How would [...]
23 Feb 10
10 Famous Microsoft Interview Puzzles
Here is a list of 10 famous puzzles which have been asked on a Microsoft Interview. They are not in any specific order. Clock Hands How many times a day do the minute and hour hands of a clock overlap? Answer Is Your Husband a Cheat? A certain town comprises of 100 married couples. Everyone in [...]
23 Feb 10
Trains and Birds
Question: A train leaves City X for City Y at 15 mph. At the very same time, a train leaves City Y for City X at 20 mph on the same track. At the same moment, a bird leaves the City X train station and flies towards the City Y train station at 25 mph. [...]
18 Feb 10
Clock Hands
Question: How many times a day do the minute and hour hands of a clock overlap? Answer: Did you think the answer was 24 times? Well if you did, it’s time you think again. Let’s do some math. In T hours, the minute hand completes T laps. In the same amount of time, the hour hand [...]
17 Feb 10
10 Google Interview Puzzles
Here is a list of 10 puzzles which have been asked on a Google Interview. They are not in any specific order. Is your husband a cheat? A certain town comprises of 100 married couples. Everyone in the town lives by the following rule: If a husband cheats on his wife, the husband is executed as [...]
12 Feb 10
My Tech Interviews
Hello everyone, Welcome to My Tech Interviews. A blog which helps people prepare for a software technical interview. My Tech Interviews This blog is dedicated to helping people prepare for a technical interview, mainly for a software interview. It contains various types of questions like puzzles and programming tasks. These questions are not posted for [...]
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