Which is faster, Heat or Cold ? Explain.

What does an Island and the letter T have in common?

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?

It comprises roots which nobody sees,
Much taller than those trees,
Up and up it goes,
Still it never grows?

Two in a corner, one in a room, zero in a house, but one in a shelter. What is it?

What makes this number unique: 8,549,176,320?

There is an exact a week gap between Christmas and New Year. Hence, It is obvious that the new year that comes right after Christmas comes on the same day of the week.

A Strange thing happened in the Year 1777. Christmas occurs on Wednesday and New Year on Monday. How is that possible?

Count the number of squares in the picture below.

Why is a river so rich ?

Can you find the thief by just looking at the picture below?