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?

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

ST ND RD TH '?'

Find the value of "?" in the ball picture Riddle below:

What is at the end of a rainbow?

What can you see in the middle of March and April that you can never see in any other month?

It is a nine-letter word.
The exact opposite of the phrase "friendly and outgoing"
It contains the word "over".
It starts will a vowel.

What is it?

Find the next number in the series

12, 20, 40, 72, 116, 172 ?

I know a ten-letter word in the English language which can be typed using only the top rows of the computer keyboard.

A maths symbol is hidden in the below Bar Graph. Can you decipher it?

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