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?

What is full of holes but still holds water?

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?

You are given with the following sum. Each of the letters can be decoded as a digit. If we tell you that D = 5, then can you solve it entirely?

DONALD
+GERALD
=ROBERT

Can you divide the below-given shape into four equal and identical pieces?

Analyze and find the missing item in the sequence:
16, 06, 68, 88, __, 98

A man died, leaving $10,000,000 for his widow, 5 sons and 4 daughters. Each daughter received an equal amount, each son received twice as much as a daughter, and the widow received three times as much as a son.

How much did the widow receive?

What begins with T, ends with T, and has T in it?

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

I taste better than I can smell. Who am I?