Can you make numbers like 24, using numbers 3,3,7 & 7 with any arithmetic operator?

Can you find out the number that should replace the question mark with a valid reason?

What is the next number in this series?

4,12,84,3612....

In two decks of cards, what is the least amount of cards you must take to be *guaranteed* at least one four-of-a-kind?

In this image, you can see three almost identical Doraemon images. Can you spot the odd one out from them?

I have one of the three numbers: 1, 2, or 3 in my mind. I speak only truth. You can ask me just one question for which I will only reply in yes or no or don't know. What question will you ask from me so that you are able to know the number?

This is a famous paradox which has caused a great deal of argument and disbelief from many who cannot accept the correct answer. Four balls are placed in a hat. One is white, one is blue and the other two are red. The bag is shaken and someone draws two balls from the hat. He looks at the two balls and announces that at least one of them is red. What are the chances that the other ball he has drawn out is also red?

There are three houses in a straight row. One is red, one is blue, and one is white. The red house is left of the middle. The blue house is right of the middle. Where's the white house?

You visit a home for specially-abled children on the occasion of Christmas where you meet with 50 children. You have a box of chocolates containing 50 chocolates exactly.

What if you were asked to one chocolate to each child in a manner that one chocolate still remains in the box? Is it possible?

Out of four images which one is the odd one out?