What brings you down but never up?

Can you find the hidden mobile that is lost in the rug?

The following sentence is false. The preceding sentence is true.
Are these two sentences true or false?

Yesterday I fell from 30 feet high ladder but I don't get hurt. Why?

Three ants are going up a hill, one behind the other. The last ant then says to the other ants, 'There is an ant behind me!'' How come?

Readers with the most attentive eyes can find three differences between the pictures of a cat on a box. Test your observation power now!

Decode below three cipher riddles:

26 L of the A
7 D of the W
1000 Y in a M

In a secret society, a buried chamber can be accessed only via a secret password. The password is seven characters long and comprises of just letters and numbers.

You find a code that can help you in cracking the password. The code says "You force heaven to be empty".

Can you deduce the password from that?

What has six faces, but does not wear makeup, has twenty-one eyes, but cannot see?

Assume there are approximately 5,000,000,000 (5 billion) people on Earth. What would you estimate to be the result, if you multiply together the number of fingers on every person's left hand? (For the purposes of this exercise, thumbs count as fingers, for five fingers per hand.) If you cannot estimate the number then try to guess how long the number would be.