I have some blue and red sock in my drawer. I have a total of 4 socks. I pick 2 socks and the chance that I get a pair of red socks is 1/2.

What is the chance of picking a pair of blue socks?

Once upon a time, there was a castle on a square island. The entire island was surrounded by a 14m wide trench. The Romans had wanted to invade the castle and had brought a few wooden planks along with them to facilitate themselves in crossing the moat. The planks were however found to be only 13m long.

The Romans still managed to cross the trench. How did they do it?

A pond had 60 fish, out of which, all but 20 died.
How many fishes are now present in that pond?

I have a hole in my back and legs I lack.
I live where I can’t breathe and I eat without teeth.
What am I?

It is raining today at 11:59 am. What is the probability of sunny weather after 72 hours?

Eight of us go fourth, not back, to protect our king from an attack. What are we?

You have three orange, two pink and five purple balls in the drawer beside your bed. There is no electricity and the room is entirely dark. How many balls must you take out to ensure at least one ball of each colour at least?

Can you count the number of blocks in the picture below?

Count the number of lines in the image below ?

It is a six-letter word.
The first four letters are me.
The second and last letters are the same.
The fourth second and last letter is payment.

Who is it?