A 52% bias toss for head using the 51% tail bias coin was done to obtain a fair result.

Can you find how bias is the floor in this case?

Why is it very easy to weigh a fish?

How can you make number one disappear by adding something to it?

A bag contains 64 balls of eight different colours. There are eight of each colour (including red). What is the least number you would have to pick, without looking, to be sure of selecting 3 red balls?

You need to move three matchsticks to form three squares. Can you do it?

In the figure, you can see nine stars. What you have to do is connect all of them by using just four line and without lifting your hand i.e. in a continuous flow.

This puzzle is for Harry Potter fans. Do you know why Tom Riddle is called Lord Voldemort?

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

They do not possess flesh or feathers or scales or bone
But still, they are blessed with fingers and thumbs of their own.

John is 45 years older than his son Jacob. If you find similarities between their ages, both of their ages contain prime numbers as the digits. Also, John's age is the reverse of Jacob's age.

Can you find their ages?