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#1 - HTC Logical Interview Problem

Difficulty Popularity

You go to your friend's place and decide to stay at night. At night you start feeling cold and he asks you to open the drawer attached with the cupboard and take out socks for all three of you. But he keeps a condition that you have to take out three pairs of same color.

In the drawer, there are 2 red, 4 yellow, 6 purple, 8 brown, 10 white, 12 green, 14 black, 16 blue, 18 grey, and 20 orange socks. The problem is that the room is dark and you can't see anything.

In such a scenario, how many socks will you have to take out to make sure that you have at least three pairs of socks of same color?

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#2 - Popular Goat Wolf and Cabbage Interview Puzzle

Difficulty Popularity

This is an old one but surprisingly, many peoples still don't know the answer. There is a river. On one end is a man, a wolf, a goat and a cabbage. There is a boat which has to be used to cross the river. However, the man can take only one thing with him at one time. Now if the goat and the cabbage is left behind, the goat will eat it and if the goat and wolf are left behind, the wolf will eat the goat.

How will he cross the river with the two animals and the cabbage?

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#3 - Extremely Tough Series Interview Question

Difficulty Popularity

Find the next number in the series

3, 3, 5, 4, 4, __?

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#4 - Hard Yahoo Logical Mathematics Interview Question

Difficulty Popularity

In an old town, there lived a pot maker who wanted to sell the last stock of his craft to a merchant. When the merchant asked him how many pots he had, he replied that he was unable to count after 100. But he gave him certain clues to figure out for himself:

If the number of pots are divided by two, there will be one left.
If they are divided by three, there will be one left.
If they are divided by four, there will be one left.
If they are divided by five, there will be one left.
If they are divided by six, there will be one left.
If they are divided by seven, there will be one left.
If they are divided by eight, there will be one left.
If they are divided by nine, there will be one left.
If they are divided by ten, there will be one left.
But if they are divided by eleven, there will be no pot left.

Can you find the number of pots, the pot maker possess?

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#5 - Yahoo Logical Mathematics Interview Question

Difficulty Popularity

Suppose that you are building a tower using play bricks. A white brick is 19 mm tall whereas a black brick is 21 mm tall.

If you want to build a tower 562 mm tall, how many of each will be required?

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#6 - Genentech Interview Tricky Train Problem

Difficulty Popularity

Wally is journeying through train from destination A to destination B. At an interval of every five minutes, he finds a train coming from the opposite direction. The velocity of the trains are equal of either direction.

If Wally reached the destination B in one hour, how many trains did he see through his journey?

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#7 - Ultimate Software Interview Mystery Puzzle

Difficulty Popularity

A lady is killed in her apartment. The possible suspect are all her ex - Peter, Jason, Fredd, Danny and Danke. On the crime scene, a calendar is found on which there are certain numbers that are being written with blood - 6, 4, 9, 10 and 11.

The police is not able to find out the killer and then Sherlock is called. Just a look at the numbers and he is able to deduce the killer. Can you?

• Views : 50k+
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#8 - NetApp Interview Tricky Probability Puzzle

Difficulty Popularity

What is the probability that two friends have their birthday in the same month?

• Views : 50k+
• Sol Viewed : 20k+

#9 - Intel Clock Interview Question

Difficulty Popularity

Can you find out the angle between the minute hand and the hour hand at 3:15 on an analog clock? Think hard and then come to a conclusion.

• Views : 50k+
• Sol Viewed : 20k+

#10 - Equidistant Buildings Interview Puzzle

Difficulty Popularity

You are a builder who is building a new society. You are required to build four buildings that are equidistant from each other which means the distance from each building to the other must be equal.

You have read that only three points can be equidistant from each other. How can you complete the assignment as required?

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