If there are fifteen crows on a fence and the farmer shoots a third of them, how many crows are left?

Four cars come to a four-way stop, each coming from a different direction. They can’t decide who got there first, so they all go forward at the same time. All 4 cars go, but none crash into each other. How is this possible?

Why is it very easy to weigh a fish?

A number with an interesting property:

When I divide it by 2, the remainder is 1.
When I divide it by 3, the remainder is 2.
When I divide it by 4, the remainder is 3.
When I divide it by 5, the remainder is 4.
When I divide it by 6, the remainder is 5.
When I divide it by 7, the remainder is 6.
When I divide it by 8, the remainder is 7.
When I divide it by 9, the remainder is 8.
When I divide it by 10, the remainder is 9.

It's not a small number, but it's not really big, either.
When I looked for a smaller number with this property I couldn't find one.

Can you find it?

Get total of 120 by using five zeros 0,0,0,0,0 and any one mathematical operator.
Do you ?

What is the fewest number of coins that would be required in order to make sure each and every coin touches exactly three other coins?

How can you make a TV, a bed, a dog, and a car liquid?

If you drop me I’m sure to crack, but give me a smile and I’ll always smile back. What am I?

Quickly Solve this riddle

7 - 4 + 3 * 0 + 1 = ?

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?