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

It is raining today at 11:59 am. What is the probability of sunny weather after 72 hours?

A high school has a strange principal. On the first day, he has his students perform an odd opening day ceremony:

There are one thousand lockers and one thousand students in the school. The principal asks the first student to go to every locker and open it. Then he has the second student go to every second locker and close it. The third goes to every third locker and, if it is closed, he opens it, and if it is open, he closes it. The fourth student does this to every fourth locker, and so on. After the process is completed with the thousandth student, how many lockers are open?

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

Buy me, smell me or deliver me, I do not change.

Who am I?

I have eight fingers and two thumbs but I do not live. What Am I?

Count the number of squares in the picture below.

Can you find the six hidden animals in the picture below?

Look at the below sequence of letters and tell us what the next letter should be:

O T T F F S S ?

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