What do you call a fish without an eye?

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

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)

Find out a multi-digit number that if multiplied by the number 9 or any of its multiplications products (i.e. 18, 27, 36, 45,..) will result in the multiplication factor repeated (n) number of times.

Solve below popular number sequence
314 159 265 358 979 323 846 ?

Make the seating arrangement of 10 children in such a way that there are 5 rows with 4 children in each row.

What's the next in the series?

H, Be, F, S, Mn, Kr, In, Gd, Tl, ?

How many sides does a circle have?

Before reading ahead, you must know the fact that only one of the people here is telling the truth.

A says that B is lying.
B says that C is lying.
C says both A and B are lying.

Can you find out who is speaking the truth?

How many times can you subtract the number two from the number fifty?