what's the probability of getting a king or a queen from a pack of 52 cards?

Take 9 from 6, 10 from 9, 50 from 40, and leave 6.

How Come ??

I make a loud sound when I’m changing. When I do change, I get bigger but weigh less. What am I?

ENEMY = 2 * LINK
LINK + 2 = HELL

Then what will be TAXI + HELL? Select from the options below:
a) ROTTEN
b) DANGER
c) HEAVEN
4) MORTAL

Find the smallest sentence with all the English alphabet.

Christina is practising her dance steps along with her friends. In a particular sequence, all of them form a row. At that point, Niharika is standing in the 4th position from either end of the row.
Can you find out how many girls are practising together?

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?

Find The Missing Number In the Sequence.
6 25 64 ? 32 1

What kind of storm is always in a rush?

Can you spot the hidden girl in the picture below?