What is the fewest number of coins that would be required in order to make sure each and every coin touches exactly three other coins?

If all Goats are Sheep and all Sheep are Deers, are all Deers Goats ?

Can you find out the missing number?

? 4 5 3 5

9 5 7 10 3

You have a square. What you have to do is cut and reassemble the square such that you create a Red Cross sign that has the same volume as that of the square.

Solve below popular number sequence
314 159 265 358 979 323 846 ?

Can you complete the sequence?

192, 021, 222, 324, 252, 627, 2__, 9__?

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?

Below, you can see three complete equations and one incomplete. Based on the three complete ones, can you complete the incomplete one?

5 $ 4 $ 3 $ 9 = 4215
6 $ 9 $ 2 $ 6 = 3816
4 $ 7 $ 3 $ 3 = 1122
7 $ 2 $ 7 $ 4 = ____

Using four sevens (7) and a one (1) create the number 100. Except for the five numerals, you can use the usual mathematical operations (+, -, x, :), root and brackets ()

The Little ant seems to be always confused. Do you know why?