What does the following BrainBat signifies?

ABCDEFGHIJKLMNOPQRSTUVWYZ

QQQQQQQQQQQQQQQQQQQQQQQQQ.

Complete the following series. It.s very logical:

1, 4, 5, 6, 7, 9, 11, __?

What has a bottom at the top?

Solve the equation in the image by looking at the pattern closely.

You see a mathematical expression in the picture. Can you think of a movie that this expression refers to?

Eight of us go fourth, not back, to protect our king from an attack. What are we?

Three cars are driving on a track that forms a perfect circle and is wide enough that multiple cars can pass anytime. The car that is leading in the race right now is driving at 55 MPH and the car that is trailing at the last is going at 45 MPH. The car that is in the middle is somewhere between these two speeds.
Right now, you can assume that there is a distance of x miles between the leading car and the middle car and x miles between the middle car and the last car and also, x is not equal to 0 or 1.
The cars maintain their speed till the leading car catches up with the last car and then every car stops. In this scenario, do you think of any point when the distance between any two pairs will again be x miles i.e. the pairs will be x distance apart at the same time ?

An ape is trying to climb on a pole that is 60 feet high. Due to the slippery surface, the ape climbs 3 feet in a minute only to slip back 2 feet.

How much time do you think the monkey will take to reach the top of the pole?

Can you complete the sequence?

192, 021, 222, 324, 252, 627, 2__, 9__?

Make eight squares by moving only two matchsticks.
Note- Square can be of different sizes.