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?

Make eight squares by moving only two matchsticks.
Note- Square can be of different sizes.

Solve this riddle by finding the odd one out from the rest.

John asked Jack, "The time right now is 7 pm. Can you tell me what will be the time 23, 999, 995 hours later ?"

While Bella does not know the answer, do you ?

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

Can you make numbers like 24, using numbers 3,3,7 & 7 with any arithmetic operator?

Can you make four (4) nines (9) equal 100?

Can you count the number of squares in the figure below?

How can you drop a raw egg from a height onto a concrete floor without cracking it?

When can we add 2 to 11 and get 1 as the correct answer?