Why is a river so rich ?

What does it mean?

There are two candles. Both will only burn exactly for an hour. How will you use these two candles to measure forty-five minutes?

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

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

Which city is three-fifths chick two third cat and 50% goat?

What two things can you never eat for breakfast?

Can you find the missing number in the third row?
35 20 14
27 12 18
5 2 ?

What's the only room from which no one can enter or leave

I have no life, but I can die. What am I?

Alex is stranded on an island covered in forest.
One day, when the wind is blowing from the west, lightning strikes the west end of the island and sets fire to the forest. The fire is very violent, burning everything in its path, and without intervention the fire will burn the whole island, killing the man in the process.

There are cliffs around the island, so he cannot jump off.

How can the Alex survive the fire? (There are no buckets or any other means to put out the fire)