What does the below rebus riddle means?

If you toss a coin 10 times and it lands heads up every time, what are the chances it will land heads up if you toss it again?

There was a man he lives in a hotel each morning he presses the first floor button each evening if there is a person in the elevator he asks him to press the 10 floor button if there is no one in the elevator he takes the stairs why.

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?

In the following series, a set of numbers is progressing with a particular pattern. Can you deduce that pattern and find the missing set?

(2 + 6), (21 + 6), (58 + 6), (119 + 6), ___

A sundial has the fewest moving parts of any timepiece. Which has the most?

Decode the movie name from the below picture?

Three ants are sitting at the three corners of an equilateral triangle. Each ant starts randomly picks a direction and starts to move along the edge of the triangle. What is the probability that none of the ants collide?

By removing one matchstick and adding one matchstick, can you convert the word "ZOO" to an animal name?

Forwards I am heavy, backward I am not. What am I?