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Myntra Interview Puzzle #1 - Prisoner Emperor Brain Teaser

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You are a prisoner sentenced to death. The Emperor offers you a chance to live by playing a simple game. He gives you 50 black marbles, 50 white marbles and 2 empty bowls. He then says, 'Divide these 100 marbles into these 2 bowls. You can divide them any way you like as long as you use all the marbles. Then I will blindfold you and mix the bowls around. You then can choose one bowl and remove ONE marble. If the marble is WHITE you will live, but if the marble is BLACK... you will die.'

How do you divide the marbles up so that you have the greatest probability of choosing a WHITE marble?

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Myntra Interview Puzzle #2 - Interview Hourglass Puzzle

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I have two hourglasses
A) Measures an exact 7 hours
B) Measures an exact 4 hours.

Using these two hour glasses, you need to measure an exact nine hours ?

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Myntra Interview Puzzle #3 - Conditional Probability Riddle For Interview

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There are four friends – Adam, Bella, Christopher and Drew. All of them are asked to choose any number in their mind. Now what is the probability that every one of them has the same number in mind?

PS: The chosen number must be in between 1 to 5.

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Myntra Interview Puzzle #4 - Cake Grandma bridge Logic Problem

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Rohit is on his way to visit your Grandma, who lives at the end of the state.It's her birthday, and he want to give her the cakes that he has made.Between his place and her grandma house, he need to cross 7 toll bridges.
Before you can cross the toll bridge, you need to give them half of the cakes you are carrying, but as they are kind trolls, they each give you back a single cake.

How many cakes do rohit have to carry with him so he can reach his grandma home with exactly 2 cakes?

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Myntra Interview Puzzle #5 - Hard Maths Riddle

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Find a 8 digit number that if multiplied by the number 9 or any of its multiplications products (18, 27, 36, 45,..) will result in the multiplication factor repeated (n) number of times.

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Myntra Interview Puzzle #6 - Trick Maths Train Problem

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An express electric train takes exact three seconds to enter tunnel which is 1 mile long.

If train is traveling at 120 mile an hour, how long will it take to pass completely through the tunnel ?

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