How is the moon similar to a dollar?

Can you count the number of lines in the below picture?

The first box has two white balls. The second box has two black balls. The third box has a white and a black ball.

Boxes are labeled but all labels are wrong!

You are allowed to open one box, pick one ball at random, see its colour and put it back into the box, without seeing the colour of the other ball.

How many such operations are necessary to correctly label the boxes?

There is an exact a week gap between Christmas and New Year. Hence, It is obvious that the new year that comes right after Christmas comes on the same day of the week.

A Strange thing happened in the Year 1777. Christmas occurs on Wednesday and New Year on Monday. How is that possible?

Count the number of triangles in the given picture.

Next Number in the Series,

5, 16, 49, 104, ?

If you toss a coin 10 times and it lands heads up every time, what are the chances it will land heads up if you toss it again?

What do you call a fish without an eye?

What is wrong in the below Picture?

What can you see in the middle of March and April that you can never see in any other month?