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You are given 9 gems. Out of those 9 gems, 8 weigh 1 gram and 1 weigh 2 grams. What are the minimum number of weighing in which you can find out the heavier gem in a balance and how?

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Anna is two years elder than Bella who is twice as old as Camilla. If the sum of their ages is 27, Find out the age of Bella.

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In a passenger bus, 1/3rd of the passengers got down at the very first stop and 30 people climbed up. In the second stop, 1/4th of the passengers got down and 12 people climbed aboard. On the third and the last stop 84 people moved out of the bus.

Can you calculate the initial capacity of the bus?

Can you calculate the initial capacity of the bus?

Difficulty Popularity

It was my daughter's birthday and I asked my wife to bring a ribbon to tie the gift I had purchased for her. She went to a shop and accidentally interchanged the feet with inches and brought the wrong length of ribbon.

When I measured the ribbon, I came to know that it is just 5/8 of the length that was required. Can you calculate the length of the ribbon I had asked for?

When I measured the ribbon, I came to know that it is just 5/8 of the length that was required. Can you calculate the length of the ribbon I had asked for?

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?

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