There was an aeroplane crash, every single person died, but two people survived. How is this possible?

Can you count the number of triangles in the picture below?

John was driving a bus and got stuck when passing through an underpass. Then came Jacob with a needle and got the bus out of the underpass.

What did the boy do?

Irene killed hundreds of people mercilessly and yet the police were not able to put her behind the bars. Why?

Jim and Sarah are in a long-distance relationship. Jim buys an engagement ring for Sarah and wants to mail it to her. Unfortunately, the only way to ensure the ring will be received is to place a lock on the package. Jim has locks and Sarah has locks, but neither has keys for each other’s locks. How can they make sure the ring isn’t stolen?

What is the word or phrase below?
R | E | A | D

I am a prime number.
The double of myself is equal to the square of me.

which number am I?

Imagine a box with two cogwheels, one big with 24 teeth and one small with 8 teeth. The big one is firmly attached to the center of the box which means it does not turn or move while the small one rotates around the big one.

How many times do you think that the smaller wheel will turn compared to the box when it turns once around the big one?

Which tank will fill first?

What number do you get when you multiply all of the numbers on a telephone's number pad?