What is the next number in this series?

4,12,84,3612....

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?

I taste better than I can smell. Who am I?

The horse jumps over the king.
Strangely there is absolutely no scratch on him.

Can anyone explain, how is this possible?

A man dies of old age on his 25 birthday. How is this possible?

why number 8549176320 is one of a kind?

Which statement is true out of the following?
One statement here is false.
Two statements here are false.
Three statements here are false.

On a certain day, John celebrated his birthday. Two days later, his older twin brother Jacob celebrated his birthday.

Is this even possible? How can it be?

John went to meet his friend Jacob, but when he was about to reach the main gate, John notices that Jacob had a mighty dog who was fastened to the tree. The chain is long enough that it allows the dog to reach the main gate.

How can the John reach the main gate?

Two fathers and two sons went fishing one day. They were there the whole day and only caught 3 fish. One father said, that is enough for all of us, we will have one each. How can this be possible?