Can you find out the total number of triangles in the given figure?

What has one eye, but can’t see?

10 people came into a hotel with 9 rooms and each guest wanted his own room. The bellboy solved this problem.
He asked the tenth guest to wait for a little with the first guest in room number 1. So in the first room, there were two people. The bellboy took the third guest to room number 2, the fourth to number 3, ..., and the ninth guest to room number 8. Then he returned to room number 1 and took the tenth guest to room number 9, still vacant.
How can everybody have his own room?

I speak without a mouth, and hear without ears. I have no-body, but I come alive with the wind. What am I?

What word does this rebus represent?

meta meta
meta meta

How high do you have to count before you use the letter “a” in the English spelling of the whole number?

Give it food and it will live; give it water and it will die.

Keyboard words are not in alphabetical order, Why?

There's one "sport" in which neither the spectators nor the participants know the score or the leader until the contest ends.

What is it?

A word I know,
Six letters contain,
Subtract just one,
And twelve is what remains.