We have four gears with below features=> Both Gear A and D has 60 teeth=> Gear B has 40 teeth=> Gear C has 20 teeth=> Every two minutes, Gear B makes 25 full turns.What is the relative speed of Gear A and Gear B?

A girl is twice as old as her brother and half as old as her father. In 50 years, her brother will be half as old as his father. How old is the daughter now?

How many times can you subtract the number two from the number fifty?

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

A wealthy man lives alone in a small cottage. Being partially handicapped he had everything delivered to his cottage. The mailman was delivering a letter one Thursday when he noticed that the front door was ajar. Through the opening he could see the man's body lying in a pool of dried blood. When a police officer arrived he surveyed the scene. On the porch were two bottles of warm milk, Monday's newspaper, a catalog, flyers, and unopened mail. The police officer suspects it was foul play. Who does he suspect and why?

What 4-letter word can be written forward, backward or upside down, and can still be read from left to right?

If 5 cats catch 5 mice in 5 minutes, how long will it take one cat to catch a mouse?

Make a sentence consisting of three words that have the whole alphabet.

I have no doors but I have keys, I have no rooms but I have space, you can enter but you can’t leave! What am I?

Things are just as they seem, right? Well, check again.
Can you count the number of tigers in this picture ?