Why do you find that most of the buildings are deprived of the 13th floor?

A girl was standing near the window thinking something. All of a sudden she decides something and throws something out of the window. She dies very soon after throwing it. She was perfectly healthy and had no disease or allergy. No one killed her and she did not commit suicide.

Can you think of any possible explanation that is logical as well for what happened there?

Can you convert the number zero(0) into a positive number using just one mathematical operator ?

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 make numbers like 24, using numbers 3,3,7 & 7 with any arithmetic operator?

We have four gears with below features=> Both Gear A and D has 60 teeth=> Gear B has 40 teeth=> Gear C has 20 teeth=> Every two minutes, Gear B makes 25 full turns.What is the relative speed of Gear A and Gear B?

The current time can be represented by below textual rebus.

0
=========
B.Sc
LLB

Can you tell us the current time?

Take away the whole and some still remain. What is it?

There is a square of a particular number which when doubled, becomes 7 more than its quarter.

Can you find the number?

What does this rebus means ?