Count the number of lines in the image below ?

It has horns but can’t beep. It is like to bleat but It is not a sheep. What is it?

Before Mount Everest was discovered, what was the highest mountain in the world?

Complete the series by replacing "?" with the correct number.

ST ND RD TH '?'

You’re out on the water and see a boat filled with people. You look away for a second and look back again, but this time you don’t see a single person on the boat. Why? Hint: The boat did not sink.

There is a shop where written:
Buy 1 for $1
10 for $2
100 for $3
I needed 999 and still only paid $3. How could this be financially viable for the shop-keeper?

Why is it very easy to weigh a fish?

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

What is the longest word in the dictionary?

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?