How many words can a pen with half refill write?

Can you find out the total number of triangles in the given figure?

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?

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

Rectify the following equality 101 - 102 = 1 by moving just one digit.

In a mathematical quiz, you are asked the following question:

Use three 9s in a mathematical expression without dividing or multiplying to form the number one.

Can you answer the question?

A clock loses 10 minutes each hour. If the clock is set correctly at noon, what time is it when it reads 3 PM?

A man in a car saw a Golden Door, Silver Door and a Bronze Door. What door did he open first?

Can you name an animal whose killing cannot be performed without spilling your own blood?

By moving just one matchstick, you need to make the below statement true. Can you do it?