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

why number 8549176320 is one of a kind?

What 4-letter word can be written forward, backward or upside down, and can still be read from left to right?

I have Rs.50 and I spend it in the way as below.

It comprises roots which nobody sees,
Much taller than those trees,
Up and up it goes,
Still it never grows?

This was asked in an interview with Coa-Cola.

The interviewer has given me 100 marbles(50 white and 50 black) and two empty boxes.
He then told me that he will leave the room and i need to place all the marbles in two boxes.

And When he come back, he will draw a marble from any of the two box and if the marble is white I will be hired.

Also
* No box can be empty.
* All 100 marbles must be placed in one of the two boxes.

So what should I have done?

Which alphabet is a part of our body?

A pregnant woman is preparing to name her seventh child. Her children's names so far are Dominique, Regis, Michelle, Fawn, Sophie, and Lara. What will she name her next child -- Jessica, Katie, Abby or Tilly?

A man was going to bleach his socks because they had gotten muddy the day before. As he was pouring the bleach into the washing machine, he spilt some on the floor. He got some cleaning fluid and mopped it up with a rag. Minutes later he was dead. What killed him?

Find the next number in the series

12, 20, 40, 72, 116, 172 ?