Can you replace the question mark with the correct number?

What has six faces, but does not wear makeup, has twenty-one eyes, but cannot see?

Joseph buys three kinds of chocolates for 100 rupees. The first one is priced at 5 rupees, second one at 3 rupees and third one at 0.5 rupees.

If he bought 100 chocolates in total, how many pieces do you think he bought each chocolate?

In the given figure, you can see that four match sticks are used to form a square. Can you form five squares by using six matches?

I sleep during the day and fly at night, but I have no feathers to aid my flight. What am I?

By using 'because' continuously three times, can you make an English statement ?

If you paint a brown house white it will become a white house. If the stoplight changes from red to green, then the light is green. So, if you throw a white shirt into the Red Sea, what will it become?

It is an eleven letter word.
The first, second, third and fourth letters form a banquet's name.
The fifth, sixth and seventh letters form a car's name.
The eighth, ninth, tenth and eleventh letters form a mode of transport.

Can you identify what word it is?

Prove that the below maths equation is true.

8 + 8 = 91

Can you place six X (crosses) in below board without making three in a row in any way ?