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

How many letters are in the alphabet?

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

What question can you never answer yes to?

An evil man kidnapped someone and made them take one of two pills. One was harmless, but the other was poisonous. Whichever pill the victim took, the kidnapper took the other one. The victim took their pill with water and died. The kidnapper survived. How did the kidnapper get the harmless pill?

I look flat, but I am deep. Hidden realms I shelter. Lives I take, but the food I offer. At times I am beautiful. I can be calm, angry, and turbulent. I have no heart but offer pleasure as well as death. No man can own me, yet I encompass what all men must have. What am I?

What is the next number in the series?

15 29 56 108 208 ?

In two decks of cards, what is the least amount of cards you must take to be *guaranteed* at least one four-of-a-kind?

Why are all black people so quick ?

I have lakes with no water, mountains with no stone and cities with no buildings. What am I?