If 21x = 79x, what is the value of x?

A pack of cards has 40 cards. You are blindfolded. Out of 40, 25 cards are facing down while 15 are facing up. You have been asked to divide this pack of cards into two decks - so that each deck contains an equal number of face-up cards. Remember, you are blindfolded.

How will you do it?

What does the below rebus riddle means?

What can you serve, but never eat?

Can you find a pattern and the missing number in the series given below?

100, 155, 258,? , 584, 819.

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

How Come ??

John was a very careless driver, so his owner Jacob gave him an offer that he will get an incentive of Rs.30 for every bottle box he delivered without breaking it and he will be charged Rs.90 for every bottle box he broke. Jacob gave John 100 bottles-box to deliver. After delivery, Jacob paid John Rs.2400. How many bottles-box did John break?

Find the last number in the series below:

voN luJ yaM raM ---

Pronounced as 1 letter, And written with 3, 2 letters there are, and 2 only in me. I’m double, I’m single, I’m black blue and grey, I’m read from both ends, and the same either way. What am I?

Your mother’s brother’s only brother-in-law is asleep on your couch. Who is asleep on your couch?