what does this picture(rebus) riddle means ?

Who can jump higher than a Mountain?

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

Can you find out the remainder when 3^300 is divided by 5?

I ask Joseph to pick any 5 cards out of a deck with no Jokers.

He can inspect then shuffle the deck before picking any five cards. He picks out 5 cards then hands them to me (Jack can't see any of this). I look at the cards and I pick 1 card out and give it back to Joseph. I then arrange the other four cards in a special way, and give those 4 cards all face down, and in a neat pile, to Jack.

Jack looks at the 4 cards i gave him, and says out loud which card Joseph is holding (suit and number). How?

The solution uses pure logic, not sleight of hand. All Jack needs to know is the order of the cards and what is on their face, nothing more.

What famous saying does this rebus mean?

COME SERVED <---
COME SERVED
COME SERVED
COME SERVED
COME SERVED

What occurs twice in a week, once in a year but never in a day?

Can you think of any three-dimensional shape that comprises of exactly two surfaces?

1. What does:
TIM JOB
represent?

2. What does:
MO_ _
represent?

A rubber ball keeps on bouncing back to 2/3 of the height from which it is dropped. Can you calculate the fraction of its original height that the ball will bounce after it is dropped and it has bounced four times without any hindrance ?