By Admin

I Flex Interview Puzzle #1 - Famous Water Jug Problem

Difficulty Popularity

You live in Dubai and had an infinite supply of oil and a 5 liters and 3 liters jar,
how would you measure exactly 4 liters (of-course in minimum numbers of step) ?

By Admin

I Flex Interview Puzzle #2 - Thinking Age Brain Teaser

Difficulty Popularity

Two friends , Torres and Lampard, meet after a long time.

Torres: Hey, how are you man?
Lampard: Not bad, got married and I have three kids now.
Torres: That's awesome. How old are they?
Lampard: The product of their ages is 72 and the sum of their ages is the same as your birth date.
Torres: Cool..But I still don't know.
Lampard: My eldest kid just started taking piano lessons.
Torres: Oh now I get it.

How old are Lampard's kids?

By Admin

I Flex Interview Puzzle #3 - Live Or Die Probability Puzzle

Difficulty Popularity

Hussey has been caught stealing goats, and is brought into court for justice.

The judge is his ex-wife Amy Hussey, who wants to show him some sympathy, but the law clearly calls for two shots to be taken at Hussey from close range.

To make things a little better for Hussey, Amy Hussey tells him she will place two bullets into a six-chambered revolver in successive order.

She will spin the chamber, close it, and take one shot.

If Hussey is still alive, she will then either take another shot, or spin the chamber again before shooting.

Hussey is a bit incredulous that his own ex-wife would carry out the punishment, and a bit sad that she was always such a rule follower.

He steels himself as Amy Hussey loads the chambers, spins the revolver, and pulls the trigger. Whew! It was blank. Then Amy Hussey asks, 'Do you want me to pull the trigger again, or should I spin the chamber a second time before pulling the trigger?'

What should Hussey choose?

By Admin

I Flex Interview Puzzle #4 - Popular Deductive Logic Problem

Difficulty Popularity

Eight Brothers lives in an old house where there is no electricity and no computers or any any other gadget.

Brother-1: Reading Comics
Brother-2: Playing Chess
Brother-3: Writing
Brother-4: making food for the family
Brother-5: sleeping and snoring
Brother-6: cleaning house
Brother-7: watering the plants


what is Brother-8 doing ?

By Admin

I Flex Interview Puzzle #5 - Classic Lateral Thinking Problem

Difficulty Popularity

There are two glasses in front of you. One of the glasses is full of coke and the other glass is full of lemonade. You take a spoonful of coke and mix it into the glass of lemonade. Now the lemonade glass has a mixture of coke and lemonade. You take a spoonful of that mixture and mix it inside the coke glass.

Now what do you think? - The glass with coke has more quantity of lemonade or the glass with lemonade have more quantity of coke mixed with it?

By Admin

I Flex Interview Puzzle #6 - Famous Three Balls Interview Brain Teaser

Difficulty Popularity

There are three boxes labelled as chocolates, toffees and 'chocolates and toffees’. All the labels have been put incorrectly. You can pick from any box but you have only one chance and you will have to label the boxes correctly after that.

Can you do it?

By Admin

I Flex Interview Puzzle #7 - Hard Ipl Cricket Brain Teaser

Difficulty Popularity

In a cricket tournament, there are 9 teams that are participating. According to the rules, each of the team will get to play two matches with every other teams. The top qualified four teams will then move forward for the playoffs.

Can you calculate the minimum number of matches to be won by a team to ensure a place in the playoffs?

By Admin

I Flex Interview Puzzle #8 - Impossible Brain Teaser

Difficulty Popularity

In a recreational activity, you are given four different jars of 2 liters, 4 liters, 6 liters and 8 liters respectively with an unlimited water supply. Then you are asked to measure exactly 5 liters of water using them.

How will you do it?

By Admin

I Flex Interview Puzzle #9 - Brain Teasing Statement

Difficulty Popularity

Britney tells truth only once a week. Below are a few hints for you:

First Hint: Days are Sunday, Monday and so on.
Second Hint: One day she says that she lies on Monday and Tuesday.
Third Hint: On the next day she says, 'Today is either Thursday, Saturday or Sunday'.
Fourth Hint: On the next day, she says that she lies on Wednesday and Friday.

Can you find out on which day does Britney speaks truth ?

By Admin

I Flex Interview Puzzle #10 - Heads Feet Mathematical Problem

Difficulty Popularity

In a stable there are men and horses. In all, there are 22 heads and 72 feet. How many men and how many horses are in the stable

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