Solution:

Mount Everest

(discovered or not 'Mount Everest' will be highest)

Solution:

He have 3 shelf and 4 books.

Solution:

If you ask the guard who always tells the truth, he would tell you the other guard would point you to the door of death. If you ask the guard who always lies, he would tell you the opposite door of the truth-telling guard and point you to the door of death. In either case, both guards will point to the door of death so you should choose the other one.

Solution:

Telephone

Solution:

Double or nothing

Solution:

4 socks

Although there are many socks in the draw, there are only three colors. So, four socks are enough to match one pair.

Solution:

The Letter 'A' is silent in the parliament.

Solution:

Ranbeer

Solution:

14 horses and 8 men.<br><br>If, A --> men and B --> horses<br>
So, A + B = 22 and 2A + 4B = 72<br>2 (22 - B) + 4 B = 72<br>44 - 2 B + 4 B = 72<br>44 + 2 B = 72<br>2 B = 72 - 44 = 28<br>B = 14 (horses)<br><br>
So, there are in the stable 8 men and 14 horses.

Solution:

Ronaldo