How can a man go eight days without sleep?

Do you know who was buried in John's tomb?

Find out which of the given views in the picture is accurately the top view of the given pyramid.

What is wrong in the below Picture?

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

There is a box full of marbles,
all but two are blue,
all but two are green,
and all but two are red.

How many marbles are in the box?

In the Mexico City area, there are two Houses H1 and H2. Both H1 and H2 have two children each.
In House H1, The boy plays for Mexico Youth academy and the other child plays baseball.
In House H2, The boy Plays soccer for his school in Mexico and they recently have a newborn.

Can you prove that the probability of House-H1 having a girl child is more than that of House-H2?

I am 5 letters long.
My first two tell you who I am
My first 3 could be a medicine
My last three reversed could be a young boy.
My 4th, 3rd and 2nd in that order could be a fruit drink.
If you have me you may hang me round your neck
WHAT AM I ?

What has one letter and starts with an E?

It belongs to you, but other people use it more than you do. What is it?