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

You are trapped in a room with two doors. One leads to certain death and the other leads to freedom. You don't know which is which.
There are two robots guarding the doors. They will let you choose one door but upon doing so you must go through it.
You can, however, ask one robot one question. The problem is one robot always tells the truth, the other always lies and you don't know which is which.
What is the question you ask?

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

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

At my favorite fruit stand,
an orange costs 18,
a pineapple costs 27,
and a grape costs 15.
Using the same logic, can you tell how much a mango costs?

Can you fill the blank with the correct number?

6 30 870 756030 _____

What three numbers, none of which is zero, give the same result whether they’re added or multiplied?

Jenifer and Jesica are having a conversation.

Jenifer: I am definitely not over 30.
Jesica: I am 28 and you are surely 5 years older to me at least.
Jenifer: No, you are at least 29.

You are told that both of them are lying throughout in the conversation. Can you find their respective ages?

You need to move three matchsticks to form three squares. Can you do it?

What's the best place to go shopping in the ocean?