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

Solve the puzzle by telling what does below picture means.

What is the largest amount of money that you can possess in change and still if someone asks you for a dollar, you won't be able to give?

If "P" means "-", "Q" means "/", "R" means "+", and "S" means "*" then find the value of the following:

21 Q 7 R 9 S 10 P 13

What has a ring but no finger?

What is in seasons, seconds, centuries and minutes but not in decades, years or days?

You can hear me, but you can't touch or see me.

What am I?

A woman is sitting in her hotel room and hears a knock at the door. She opens the door to see a man whom she’s never met before. He says, “I’m sorry, I have made a mistake, I thought this was my room.” He then goes down the corridor and into the elevator. The woman goes back into her room and calls security. What made the woman so suspicious of the man?

What does an Island and the letter T have in common?

A brand new Mobile Phone was on sale at 20% as a promotional offer. By what per cent must the Mobile price be increased to sell it at the original price again?