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

Forwards I am heavy, backward I am not. What am I?

Can you find out the remainder when 3^300 is divided by 5?

There is one thing that goes round the house and also inside the house but never even share a brief touch. What is it?

One is to three as three is to five and five is to four and four is the magic number.
What is the pattern?

I know a country, If you remove the last alphabet of its name, it will become a part of your body. Do you name it?

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?

There is a jar in which there are two types of candies.
20 blueberries and 16 strawberries. You perform the following steps:
1) You take out two candies.
2) If the two candies are of the same flavour, you add a blueberry one otherwise, you add the strawberry one.

You repeat these two steps till there is just one candy remaining in the jar. Which flavoured candy will be left?

A spy was in Canada trying to steal insider information on how to set up new Maple Syrup factories in their country. He was introduced to the operations manager of the biggest factory in Canada. However, the manager was suspicious and decided to test him with a question before he trusted him. So he asked, “What would you be sure to find in the middle of Toronto?” The spy thought fast and came up with an answer for the manager. What was his answer?

A shepherd had 18 sheep, out of which, all but ten died.

Can you tell us how many sheep was he left with?