I have branches, but no fruit, trunk or leaves. What am I?

I live in a bowl. I can swim. I have a tail. I also have fins and big eyes. What am I?

I have a hole in my back and legs I lack.
I live where I can’t breathe and I eat without teeth.
What am I?

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?

What does the following represent?

N N N N N N N

A A A A A A A

C C C C C C C

What is in seasons, seconds, centuries and minutes but not in decades, years or days?

Find the Next Number in the Sequence

2 9 3 1 8 4 3 6 5 7 ?

How many letters are in the alphabet?

A man stands on one side of a river, his dog on the other. The man calls his dog, who immediately crosses the river without getting wet and without using a bridge or a boat. How did the dog do it?

First, think of the colour of clouds. Next think the colour of snow. Last, think of the colour of the moon. Now, what do cows drink?