What does the following BrainBat signifies?

ABCDEFGHIJKLMNOPQRSTUVWYZ

QQQQQQQQQQQQQQQQQQQQQQQQQ.

There are nine dots in the picture that has been attached with this question. Can you join all the dots by drawing four straight lines without picking up your pen?

What is the next shape from answers A, B, C, and D figure?

A tree doubled in height each year until it reached its maximum height over the course of ten years. How many years did it take for the tree to reach half its maximum height?

Your mother’s brother’s only brother-in-law is asleep on your couch. Who is asleep on your couch?

Get total of 120 by using five zeros 0,0,0,0,0 and any one mathematical operator.
Do you ?

There is a barrel with no lid and some wine in it. 'This barrel of wine is more than half full,' said Curly. 'No it's not,' says Mo. 'It's less than half full.' Without any measuring implements and without removing any wine from the barrel, how can they easily determine who is correct?

Replace the question mark with the correct number below.

Solve below rebus puzzle?

Before Mount Everest was discovered, what was the highest mountain in the world?