Which alphabet letter is a question?

How much will a 38° angle measure when looked at under a microscope that magnifies ten times?

I can sizzle like bacon,
I am made with an egg,
I have plenty of backbone, but lack a good leg,
I peel layers like onions, but still remain whole,
I can be long, like a flagpole, yet fit in a hole.

A 52% bias toss for head using the 51% tail bias coin was done to obtain a fair result.

Can you find how bias is the floor in this case?

You have 1023 apples and 10 bags. You have to distribute these apples in these 10 bags in any way you choose. But when I ask for a certain number of apples you have to give them in terms of bags without transferring the apples from other bags. How do you distribute the apples?

Can you find the six hidden animals in the picture below?

I speak without a mouth, and hear without ears. I have no-body, but I come alive with the wind. What am I?

It walks on 4 when its young, walks on 2 when it's older, and walks on 3 when its very old?

81 x 9 = 801. What must you do to make the this equation true?

If you had a pizza with crust thickness 'a' and radius 'z', what's the volume of the pizza?