What has many keys but can’t open a single lock?

1. What does:
TIM JOB
represent?

2. What does:
MO_ _
represent?

I am a type of room you cannot enter or leave. Raised from the ground below, I could be poisonous or a delicious treat. What am I?

You are presented with three boxes. One of them has a red ball inside and the other two have a black ball inside each of them. You are asked to pick up the one with red ball and you pick one. Now, one of the other boxes is opened and it is found to have a black ball.

You are presented with a chance to change your box with the one that is left closed. Will you change your box? Why or why not?

It walks on 4 when its young, walks on 2 when it's older, and walks on 3 when its very old?

There are 3 apples in the basket and you take away 2. How many apples do you have now?

Find three numbers such that

* When we multiply three numbers, we will get the prime numbers.
* The difference between the second and the first number is equal to the third and second.

I am the fastest animal but cannot climb the tree. What am I?

A newspaper is supposed to have 60 pages, but pages 24 and 41 are missing.
Which other pages won't be there?

Find the number of squares in the below picture