Lifeless eyes on my smiling face and watch your child's sleeping place. In their dreams they hold me tight. What am I?

A train full of passengers goes through a tunnel. When the train comes out from the other end, there is no single person on the train.

How did it happen?

I have some blue and red sock in my drawer. I have a total of 4 socks. I pick 2 socks and the chance that I get a pair of red socks is 1/2.

What is the chance of picking a pair of blue socks?

2, 3, 5, 9, 17, _ What is the next number in the sequence?

What is more useful when it is broken?

Can you replace the question mark with the correct number in the below table sequence?

What occurs twice in a week, once in a year but never in a day?

Is the statement valid that it does not matter how much older a sibling is, eventually the younger one will be half as old as the older one?

I travel all around the world but always stay in the corner. What am I?

I know there are two methods by using three time the same number with a plus(+) operator , you can make sum as 60.

One of them is 20+20+20.

whats the other way ?