How can a man go eight days without sleep?

There is so small cabin inside a deep forest.
All the forest burned out to worst possible but the inside of the cabin is still the same.
However all the person inside the cabin die.

How come ?

1 + 9 + 8 = ?
considering, 28 + 8 + 92 = 10

Forwards I am heavy, backward I am not. What am I?

It has horns but can’t beep. It is like to bleat but It is not a sheep. What is it?

The doctor advised his patient to take a tablet after every fifteen minutes. He gave him five tablets in total.

How much time will he take to have all the five tablets?

How will you measure 15 minutes using two hourglasses of 7 minutes and 11 minutes respectively?

Can you find a pattern and the missing number in the series given below?

100, 155, 258,? , 584, 819.

What has 13 hearts but no other organs?

You have two rectangular wires.

Both of them have property that when you light the fire from one end , it will take 60 minutes to get completely burn.

However, they do not burn at consistent speed (i.e it might be possible 1st 20% burn in 50 minutes and 80% can burn in 10 minutes).

So how could you measure 45 minutes ?