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?

What has 13 hearts but no other organs?

In a football game, Christina defeated Teresa by 2 - 0 but no man from either side scored. How can this be possible?

How can you make the following equation true by drawing only one straight line: 5+5+5=550 ?

There are people and strange monkeys on this island, and you can not tell who is who (Edit: until you understand what they said - see below). They speak either only the truth or only lies.
Who are the following two guys?
A: B is a lying monkey. I am human.
B: A is telling the truth.

Two-person want to cross a river. Only one boat is present on the riverside that can carry only one person at a time.

However, they still manage to cross the river. How is it possible?

When 99 is considered higher than 100?

Replace The Question Mark Below With the Correct Number.

2 {38} 3
4 {1524} 5
6 {3548} 7
8 {????} 9

I am the one who remains awake when you sleep. But I need to rest when you awake. Who Am I?

Can you arrange four 9's and use at most 2 math symbols, to make the total 100?