Arrange Cubes. Measure Time by Burning Ropes. Dinner Hand Shakes. Color of the last ball II. Measure Time by Hourglass. Make a Statement. Bee Travel. Prisoners and Poison. World Trips.
Next Number. One Mile on the Globe. Marbles in Jar. Gates of Heaven. Fastest Horses. Train Station. Measure Milk by Cans. Cross the Bridge II. Last Palindromic Date. Fake Note. Next Number II. Eggs and Building. Celebrity Problem. Spider's Web. Ratio of Boys and Girls. Medicine Chest on a Boat. Quarters on a Table. Blindfolded Coin Toss. Light Switches in the Cellar. Breaking Chocolate Bars.
Spinning Disc's Direction. Equilateral Triangles using Toothpicks. Divide the Cake. Find the Defective Ball. Six Colored Cubes. Puzzle Solving is a common technique used by recruiters during freshers interview to hire for analytical roles and roles that require plenty use of logical reasoning. Several companies still adopt this method for assessing candidates for their organization which makes it imperative to be prepared for. We, thus, have compiled a list of ten common interview puzzles to help you in your fresher job interview.
You have ten stacks of ten coins each and each of them weighs 10 gm. However, one of the stacks is faulty and each of the coins in it weighs only 9 gms. What is the least number of times you have to weigh to find the faulty coin? Yup 10 would be ideal but not the least. The least number of times you have to weigh is just once!
Line up the stacks and pick 1 coin from first stack, 2 coins from second stack, 3 coins from third stack and so on. You will have a total of 55 coins. Now weigh it. If all of them were the right weight, the total would be gms. If the total is , the first stack is faulty; if the total is then the second stack is faulty and so on. You have two identical length wires which take an hour to burn.
How do you measure 45 minutes based on the burning? You first light up three ends of the two wires. The remaining end you can light up once the first wire is completely burnt. When the second wire is completely burnt, the time is 45 minutes. Arun has three sons and his friend Shakti wants to know their ages. Next, the sum of each of the numbers is added. You get a variety of numbers but there are two possibilities where the sum is Arun mentioned that his oldest like chocolate icecream, which meant there is only one older child and hence, the sons ages are 3,3 and 8.
A contract employee needs to be paid everyday but the employer has only one rod of 7 units of gold. He can make only at max 2 cuts.
How does he manage to pay him? Day 1, the employer gives him 1 unit. On day 2, the employer takes back the 1 unit and gives him 2. On day 3, he gives him 1 unit. On day 4, he takes back the 1 and 2 units and gives him a 4 unit. So on until day 7 when he gives him all the units. You have a room behind a door and there are three bulbs inside the room. You can find its three switches outside the door.
You can switch them on and off as many times as you wish but once you open the door you cannot change them. Identify which switch is connected to which bulb. Let the lightbulbs be X, Y and Z. Switch on and off X for 5 to 10 times. Explaining your reasoning as you solve a problem can allow the interviewer to see how you plan, reason and execute problem-solving under pressure. Because interview puzzles can be more about showcasing your analytical and lateral thinking than actually finding the correct solution, explaining how you arrived at your answer allows you to show your skills as well as how you approach problems.
You can also be sure to provide an answer. Even if your answer is incorrect, you have used your reasoning, logic and critical thinking to work through it, which may be more important to potential employers than what your answer is. So in most circumstances, you may want to be sure you provide a solution to every question you are asked to solve.
Interview puzzles can encompass a variety of different problems, however, most can be related to three main types of puzzles. Riddle puzzles, finding amounts and puzzles regarding numeracy tricks are types of problems you might encounter during a puzzle interview. These types of interview puzzles can be presented much like a riddle or question with a trick answer. These puzzles may be used to assess your ability to apply logical thinking to solve the problem creatively.
The following riddle problems can be commonly used during an interview puzzle. You are standing in front of two doors. There are two guards, one standing by each door. One of the guards always tells the truth, and the other guard always tells a lie, however, you have no knowledge of which guard lies or which guard tells the truth. What is the question you should ask? You might see the following puzzles if you are preparing for a puzzle interview. Three ants are located in the corners of an equilateral triangle.
Each ant moves in a random direction along the edges of the triangle. What is the probability that none of the ants will collide along the triangle? Puzzles with numbers or numeracy are problems that may use number sense to solve. Oftentimes, an interviewer may ask this type of question to see how you reason with numbers, find patterns with numbers and problem-solve with numbers. While your answer may not be as important as your logic, you may still practice these types of puzzles to ensure you arrive at a correct answer.
There are doors in a single row that are all closed. You make passes by each door, starting at the first door each time. On the first time you pass, you visit every door, and if it is closed, you open it, and if it is open, you close it.
On your second pass by, you only visit every other door, starting from the second door in line so that you are skip-counting the doors by two.
The third pass you go to every third door, the fourth pass every fourth door, and so on until you have only passed by the hundredth door. During your last pass by, which of the doors are left open and which ones are closed?
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