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Car on Hire in Goa
Posted by basilmolina49 263 days ago (http://www.taxiforrent.com)Logical interview puzzle
Posted by pwook (#85) 469 days ago (http://commoninterview.com)
Finding Celebrity logical interview puzzle. You are on a party with N guests....
Store 1 Million Phone Numbers
Posted by indian1 (#2) 558 days ago (Editorial)
What is the most efficient way, memory-wise, to store 1 million phone numbers?
Fair Coin From Biased Coin
Posted by indian1 (#2) 558 days ago (Editorial)
How can you get a fair coin toss from a biased coin?
Problem: N/2 Unique and N/2 Duplicates
Posted by indian1 (#2) 559 days ago (Editorial)
An array of size n, has n/2 unique elements and n/2 occurences of an element. Find the non-unique element in linear time?
Puzzle: Climbing Steps One or Two At a Time
Posted by indian1 (#2) 559 days ago (Editorial)
A person can take one or two steps at a time while climbing N steps. How many different ways can a person climb?
Fox and the Duck Puzzle
Posted by csguy (#13) 559 days ago (Editorial)
A duck, pursued by a fox, escapes to the center of a perfectly circular pond. The fox cannot swim, and the duck cannot take flight from the water. The fox is four times faster than the duck. Assuming the fox and duck pursue optimum strategies, is it possible for the duck to reach the edge of the pond and fly away without being eaten? If so, how?
Measure 45 Minutes
Posted by indian1 (#2) 561 days ago (Editorial)
There are unlimited ropes and all of them will burn in 1 hour.
How to measure 45 mins?
How to measure 45 mins?
3 Baskets Puzzle
Posted by indian1 (#2) 561 days ago (Editorial)
There are three baskets labeled Orange , Apple, Oracle/Apple. And all of them have wrong labels.How to find the correct label by checking only one basket
Spinning Wheel Puzzle
Posted by indian1 (#2) 567 days ago (Editorial)
Imagine a disk spinning like a record player turn table. Half of the disk is black and the other is white. Assume you have an unlimited number of color sensors. How many sensors would you have to place around the disk to determine the direction the disk is spinning? Where would they be placed?
3:15 Puzzle
Posted by matrix1 (#11) 568 days ago (Editorial)
If you look at a clock and the time is 3:15, what is the angle between the hour and the minute hands?
Car in 10 Minutes given 30 Minutes probability
Posted by matrix1 (#11) 568 days ago (Editorial)
If the probability of observing a car in 30 minutes on a highway is 0.95, what is the probability of observing a car in 10 minutes (assuming constant default probability)?
One Boy Puzzle
Posted by matrix1 (#11) 568 days ago (Editorial)
In a country in which people only want boys, every family continues to have children until they have a boy. If they have a girl, they have another child. If they have a boy, they stop. What is the proportion of boys to girls in the country?
100 Married Couples Puzzles
Posted by matrix1 (#11) 568 days ago (Editorial)
Every man in a village of 100 married couples has cheated on his wife. Every wife in the village instantly knows when a man other than her husband has cheated, but does not know when her own husband has. The village has a law that does not allow for adultery. Any wife who can prove that her husband is unfaithful must kill him that very day. The women of the village would never disobey this law. O
River Crossing Puzzle
Posted by matrix1 (#11) 568 days ago (Editorial)
Four people need to cross a rickety rope bridge to get back to their camp at night. Unfortunately, they only have one flashlight and it only has enough light left for seventeen minutes. The bridge is too dangerous to cross without a flashlight, and it’s only strong enough to support two people at any given time. Each of the campers walks at a different speed. One can cross the bridge in 1 minute,
Clock Handle Overlaps
Posted by matrix1 (#11) 568 days ago (Editorial)
How many times a day does a clock’s hands overlap?
25 Horses Puzzle
Posted by admin (#43) 569 days ago (Editorial)
This is a classic puzzle which can look simple.
Given 25 horses, find the best 3 horses with minimum number of races. Each race can have only 5 horses. You don't have a timer.
Now the challenge is how we can do it in 7 races.
Given 25 horses, find the best 3 horses with minimum number of races. Each race can have only 5 horses. You don't have a timer.
Now the challenge is how we can do it in 7 races.
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