Can you solve below mathematical equation?

2^1234 - 2^1233

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

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

There was an aeroplane crash, every single person died, but two people survived. How is this possible?

Can anyone tell me a word in the English dictionary which has a silent 'z'?

How many times in a given day, minutes and hour clock comes in a straight line ?

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?

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?

In the attached figure, you can see a chessboard and two rooks placed on the chess board. What you have to find is the number of squares that do not contain the rooks. How many are there?

What does below pictogram mean?