Replace the question mark with the correct number in the below-given picture?

Can you solve the tricky chess rebus puzzle below by ciphering the hidden meaning?

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

Rahul decided to meet Simran so he boards a local train from Bombay station. Just after the station, there is a 1km long tunnel. The train starts and is now accelerating. Rahul is a claustrophobic guy, so what is the best position for him to sit?

What 4-letter word can be written forward, backward or upside down, and can still be read from left to right?

I make a loud sound when I’m changing. When I do change, I get bigger but weigh less. What am I?

If an earthquake is 1 point higher on the Richter Scale than another earthquake which is actually 10 times stronger, how much stronger would an earthquake be if it was just half a point higher on the Richter scale?

Which alphabet is a part of our body?

Replace the 'X' with any mathematical symbol to make the expression equal to 111.

18 X 12 X 2 X 3 = 111

A man wants to cross the pit of fire which is 25 feet in length and he has 2 planks(fire resistant) 19 feet in length. How can he cross the pit of fire alive?