Where do you go to learn how to make ice cream?

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

I am taken from a mine and shut up in a wooden case, from which I am never released, and yet I am used by almost every person. What am I?

Count the Triangle in the figure given below:

John is a strange liar.

He lies on six days of the week, but on the seventh day, he always tells the truth.

He made the following statements on three successive days:

Day 1: "I lie on Monday and Tuesday."
Day 2: "Today, it"s Thursday, Saturday, or Sunday."
Day 3: "I lie on Wednesday and Friday."

On which day does John tell the truth?

You see a boat filled with people, yet there isn’t a single person on board. How is that possible?

I never stop running even when I standstill. If I am formed by joining two identical bodies together, can you guess who I am?

There are six people in a family namely M, N, O, P, Q and R.

R and O are brother and sister.

N is the brother of Q's husband.
P is the father of M and grandfather of R.

How many male members are in the family?

Can you convert the number zero(0) into a positive number using just one mathematical operator ?

How many cubic feet of dirt are in a hole of one foot deep, three feet long, and two feet wide?