Take 9 from 6, 10 from 9, 50 from 40, and leave 6.

How Come ??

What's a single-digit number with no value?

Can you spot the hidden girl in the picture below?

You and your two friends are working in a multinational company. How can you three find out the average salary of you all without disclosing your own salary to the other two?

I am a type of word that is spelt incorrectly or used differently, on purpose for humour. What am I?
Hint 1: You can find me in a joke.
Hint 2: I am a play on words.

What number divided by 4 is the same as that number minus 4?

After undergoing a successful eye operation, A blind girl has just boarded a train to her home. The doctor asked her to open the bandages after 3 hours. On her train journey, she opened the bandages and within a fraction of the time she commits suicide by jumping off the train.

Though her operation was successful, Why did she commit suicide?

How many words can a quill made with the feather of a pigeon write with a 100ml bottle of black ink?

10+10 and 11+11 can give you the same answer.

Explain how?

Out of four images which one is the odd one out?