What does the following BrainBat signifies?

ABCDEFGHIJKLMNOPQRSTUVWYZ

QQQQQQQQQQQQQQQQQQQQQQQQQ.

How can you take 2 from 5 and leave 4?

John’s parents have three sons: Snap, Crackle, and what’s the name of the third son?

I am the fastest animal but cannot climb the tree. What am I?

If I remove one from eleven it becomes Ten and if I remove one from nine also becomes Ten. How?

I have no life, but I can die. What am I?

Readers with excellent focus can find three differences between the camping scene pictures in 16 seconds. Can you? Test your eye power now!

I am weightless, but you can see me. Put me in a bucket, and I'll make it lighter. What am I?

What is more useful when it is broken?

I am taken from a mine and shut up in a wooden case, from which I am never released, and yet I am used by almost every person. What am I?