Can you find out the smallest number that can be conveyed as the sum of three squares in three unique ways?

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?

Cristina was born in 1888. She just had her 30th birthday today how did that happen?

What's the only room from which no one can enter or leave

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

Can you count the number of squares in the figure below?

How is the moon similar to a dollar?

I came first on earth but second on the heaven.
I also came twice in a week but found just once in a year.
I stay away from months but you can find me in February.

What am I?

Why did Buffon take the goal with him after every Juventus match?

You along with your friend are standing in front of two houses. Each of those houses inhabits a family with two children.

Your friend tells you the below two facts:
1) On your left is a family that has a boy who likes accounts but the other child loves science.
2) On the right is a family with a seven-year-old boy and a newborn baby.

You ask him, "Does either of the family have a girl?"

To this, he replies, "I am not quite sure. But can you guess that? If you are right, I will give you $500."

Which family do you think is likely to have a girl?