I possess a head

I flaunt a tail

But I don't have mouth or legs

Can you find out who I am?

What is the fastest way to double your money?

A family is trapped in a jungle. There is a bridge which can lead them to safety. But at one time, the bridge can only allow two people to pass through. Also, all of them are afraid of the dark and thus, they can't go alone.

Father takes 1 minute to cross, the mother takes 2 minutes, the son takes 4 and the daughter takes 5 minutes. While crossing the time taken will be according to the slower one. How can they all reach the other side in the minimum possible time?

What happened when the wheel was invented?

John was so frustrated to be the suspect of being a sleeper terrorist that he shoot himself right between the eyes with a revolver in his toilet. The revolver and the bullets were accurate. Minutes later John walks out of the toilet unharmed.
How can this be possible?

I am something people love or hate. I change peoples appearances and thoughts. If a person takes care of them self I will go up even higher. To some people I will fool them. To others I am a mystery. Some people might want to try and hide me but I will show. No matter how hard people try I will Never go down. What am I?

When I get multiplied by any number, the sum of the figures in the product is always me. What am I?

Most people think of me as money. But when they find me in the water, they won’t get any money out of me. What am I?

Find the next number in the sequence

5 12 24 36 ?

Can you find the key in the picture below?