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

Consider all the numbers between 1 and 1 million. Among all these numbers, there is something very special about the number 8 and the number 2202. What is it?

I have 50 feet long of cloth, I need to create 50 handkerchiefs each size of 1 foot. I take one minute to cut a 1-foot handkerchief. So how long will it take to cut 50 handkerchiefs?

What is the riddle which can be asked all day with a different correct answer each time.

What is so fragile that saying its name breaks it?

Find the last number in the series below:

voN luJ yaM raM ---

Can you find the mistake in the below statement?

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.

Which three-digit number, made of consecutive digits, like 567, is 2 less than a cube and 2 more than a square?

What has many keys but can’t open a single lock?