Find the value of "?" in the ball picture Riddle below:

A pond had 60 fish, out of which, all but 20 died.
How many fishes are now present in that pond?

You are confined in a room and given two metal rods. Out of these two rods, one is magnet and the other is the iron rod. They look starkly similar. You don't have any other metal object in the room.

How will you decide which one of those is magnet?

John is looking at Jenifer, but Jenifer is looking at Jacob. John is married, but Jacob is not.

Is a married person looking at an unmarried person ?

Can you find the 09 errors in the picture below?

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?

Which word is least like the others? Third, fourth, fifth, sixth, seventh, eighth, ninth?

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

A generous owner of a company decided to give a bonus of $45 to every man and $60 to every woman on his birthday. But only one-ninth of the men and one-twelfth of the women were present to take the bonus.

Can you calculate the amount of money the owner spent if there were 3552 employees?

Why do we preferably have round manhole covers and not square ones?