Baseball bat and ball cost $100. If the bat cost $99 more than the ball, what is the cost of each?

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

What has lots of eyes, but can’t see?

What two things can you never eat for breakfast?

A chess tournament is taking place on knock-out terms (the one who loses the match is out of the game).
(a) If 10 matches are played in total, how many players participated?
(b) If 20 players took part in the tournament, how many matches were played?

The two towns are exactly 100 km apart. John leaves City A driving at 30 km/hr and Jacob leaves City B half an hour later driving at 60 km/hr. Who will be closer to City A when they meet?

Identify the hidden meaning behind this picture?

What's the next in the series?

H, Be, F, S, Mn, Kr, In, Gd, Tl, ?

I am five letter word that is under you.
If you remove my 1st letter, then I am over you.
If you remove my 1st and 2nd letters then I am all around you.

Who am I?

One is to three as three is to five and five is to four and four is the magic number.
What is the pattern?