Prove that twice of ten is the same as twice of eleven.

Find the next number in the series

12, 20, 40, 72, 116, 172 ?

Today, I celebrated my 32nd birthday but I was born in 1972.
How is this possible?

A man started to town with a fox, a goose, and a sack of corn. He came to a stream which he had to cross in a tiny boat. He could only take one across at a time. He could not leave the fox alone with the goose or the goose alone with the corn. How did he get them all safely over the stream?

Suppose that you are trapped on the surface of a frozen lake. The surface is so smooth and ideal that there is no friction at all. You cant make any grip on the ice and no wind is blowing to help you out. You have just a mobile phone with you which has got no reception disabling you to call for help.

How will you plan your escape before you freeze to death on the frozen lake?

Can you find the dog hidden in a group of pandas?

You walk into a room and see a bed. On the bed, there are two dogs, five cats, a giraffe, six cows, and a goose. There are also three doves flying above the bed. How many legs are on the floor?

Make a sentence consisting of three words that have the whole alphabet.

If you toss a coin 10 times and it lands heads up every time, what are the chances it will land heads up if you toss it again?

Can you solve the tricky chess rebus puzzle below by ciphering the hidden meaning?