Which is heavier: a ton of bricks or a ton of feathers?

If all Goats are Sheep and all Sheep are Deers, are all Deers Goats ?

There are three boxes of different sizes with three cupcakes inside each of the boxes in Christina's kitchen. At night her daughter wakes up and goes to the kitchen. She opens a box and eats all three cakes.

But in the morning Christina finds out that each box still had three cupcakes. How?

Replace all '*' with digits 1, 2, 3, 4, 5 and 6 to make below statement true.

* *
x *
=====
* * *

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

Count the number of balls in picture below:

There was an aeroplane crash, every single person died, but two people survived. How is this possible?

I have a hole in my back and legs I lack.
I live where I can’t breathe and I eat without teeth.
What am I?

How many letters are in the alphabet?

John killed hundreds of people mercilessly and yet the police were not able to put her behind the bars. Why?