Difficulty Popularity

Five years ago, Katie Holmes was 5 times as old as her daughter. Five years hence, Katie's age will be eight less than three times the corresponding age of her daughter.

Can you find their ages?

Can you find their ages?

Difficulty Popularity

There is a river which has to be crossed using a boat that can accommodate only two persons at a time. On one side are three missionaries and three cannibals. All of them must reach the other side. Also in no condition should greater number of cannibals be left with less number of missionaries or they will eat them.

How will they cross the river?

How will they cross the river?

Difficulty Popularity

You have infinite supply of water. You also have 5 quart and 3 quart buckets. What is the least number of steps you will require to measure precisely 4 quarts?

Difficulty Popularity

You have ten sets of 10 coins. You are aware of exactly how much the coins weigh. You also know that all the coins in one set of ten are exactly a hundredth of an ounce off which makes the entire set of the ten coins a tenth of an ounce off. Also you are aware of the fact that all the other coins weight the correct amount. Now you are allowed to use an exceptionally precise digital weighing machine only once.

Can you identify which set of 10 coins is faulty?

Can you identify which set of 10 coins is faulty?

Difficulty Popularity

A box contains seven purple, five blue and eleven yellow balls.

What is the minimum number of tries required to get one blue and one yellow ball ?

What is the minimum number of tries required to get one blue and one yellow ball ?

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