Why is the longest human nose just 11 inches?

Can it be possible to build a house that has all its four walls facing towards the South?

Replace the question mark with the correct number.

2 + 2= 4
3 + 3= 18
4 + 4= 48
5 + 5= ?

Find the value of "?" in the ball picture Riddle below:

When can we add 2 to 11 and get 1 as the correct answer?

In a school, there are four subjects. Seventy percent of students study English, seventy five percent of students study Science, eighty five percent of students study Mathematics and eighty percent of students study Spanish.

Can you calculate the percentage of students that study all four subjects?

Two in a corner, one in a room, zero in a house, but one in a shelter. What am I?

1 + 9 + 8 = ?
considering, 28 + 8 + 92 = 10

I have lakes with no water, mountains with no stone and cities with no buildings. What am I?

You find yourself in a strange place guarded by two guards.One of the guard always say truth while other always lies.You don't know the identity of the two.You can ask only one question to go out from there. What should you ask?