What do you answer even though it never asks you questions?

Can you place six X (crosses) in below board without making three in a row in any way ?

You see me once in June, twice in November, and not at all in May. What am I?

Which English verb becomes past tense just by rearranging the letters?

It walks on 4 when its young, walks on 2 when it's older, and walks on 3 when its very old?

I live in a bowl. I can swim. I have a tail. I also have fins and big eyes. What am I?

There is a box in which distinct numbered balls have been kept. You have to pick two balls randomly from the lot.

If someone is offering you a 2 to 1 odds that the numbers will be relatively prime, for example
If the balls you picked had the numbers 6 and 13, you lose $1.
If the balls you picked had the numbers 5 and 25, you win $2.

Will you accept that bet?

I had an infinite supply of water and 5 litres and 3 litres jars.

How would you measure exactly 4 litres in the least number of steps?

Which is Odd One Out and why?

4377

3954

9862

8454

9831

John was so frustrated to be the suspect of being a sleeper terrorist that he shoot himself right between the eyes with a revolver in his toilet. The revolver and the bullets were accurate. Minutes later John walks out of the toilet unharmed.
How can this be possible?