What number should come in place of the question mark below?

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?

Take away my first letter, then take away my second letter. Then take away the rest of my letters, yet I remain the same. What am I?

John named his first son Alpha, second Beta, third Charlie and fourth Delta. What is the fifth son's name?

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

John and Jill are madly in love with each other. To remind Jill of his pure love, John wants to send her a ring by post but in their country where burglary is quite prominent, any package that is not locked comes under the risk of being stolen for the contents.

John and Jill possess many padlocks but neither one of them has the other key.

Can you find a way John can send the ring to Jill safely?

They are three errirs in this question. Can you find them?

A word I know has six letters it contains, remove one letter and 12 remain. What is it?

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?

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