There are two candles. Both will only burn exactly for an hour. How will you use these two candles to measure forty-five minutes?

Find the combined weight of the Cat, Dog and Rabbit in the given picture.

If 21x = 79x, what is the value of x?

What am I?

Which word does the below Plexor means ?

In the city of Brain Teasers, 5% of people do not list their phone numbers. Now if we select random 100 people from the phone directory, then how many people selected will have unlisted phone numbers?

What number divided by 4 is the same as that number minus 4?

What has 13 hearts but no other organs?

An American nightclub called 'The Coconut Grove' had a terrible fire in which over 400 people died. A simple design flaw in the building led to a high death toll. Subsequently, regulations were changed to ensure that all public buildings throughout the country eliminated this one detail, which proved deadly. What was it?

Four people need to cross a rickety bridge at night. Unfortunately, they have only one torch and the bridge is too dangerous to cross without one. The bridge is only strong enough to support two people at a time. Not all people take the same time to cross the bridge. Times for each person: 1 min, 2 mins, 7 mins and 10 mins. What is the shortest time needed for all four of them to cross the bridge?