I have eight fingers and two thumbs but I do not live. What Am I?

By removing one matchstick and adding one matchstick, can you convert the word "ZOO" to an animal name?

Christina, Allison and Lena are 3 daughters of John a well-known Mathematician, When I asked John the age of their daughters. He replied "The current age of her daughters is prime. Also, the difference between their ages is also prime."

How old are the daughters?

I add 5 to 9 and get 2. The answer is correct, so what am I?

If you had a pizza with crust thickness 'a' and radius 'z', what's the volume of the pizza?

I am a three digit number.
My tens digit is five more than my ones digit.
My hundreds digit is eight less than my tens digit.
What number am I?

A man is found hanging dead from the ceiling of a room. The room’s dimensions are 15 x 15 x 15. The man is only 6ft tall and the rope was only 2ft long. There are no windows and only one door to the room. The door is bolted shut from the inside, and a puddle of water is under the man. How did he kill himself?

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

The peacock is a bird that does not lay eggs. How do they get baby peacocks?

Akbar called Birbal and asked him to draw a line on the floor. He asked Birbal to make that line smaller without erasing it. Birbal smiled and did it before Akbar could blink his eyes.

How did he managed to do it?