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

What does does this rebus picture means ?

How can you take 2 from 5 and leave 4?

What is the difference between a jeweller and a jailer?

Three brothers Jacob, John, and James live in Mexico City. The product of the ages of these brothers is 175. Jacob and John are twins. How old is James?

A woman lives in a Tall building thirty-six floors high and served by several elevators which stop at each floor going up and down. Each morning she leaves her apartment and goes to one of the elevators. Whichever one she takes is three times more likely to be going up than down. Why?

A non-stop marathon is the shared favourite sport of three brothers.

*The oldest one is fat and short and trudges slowly on.
*The middle brother's tall and slim and keeps a steady pace.
*The youngest runs just like the wind, speeding through the race.

"He is young in years, we let him run!" the other two brothers explained, "'because though he is surely number one, he is second, in a way." Why is it?

What can you deduce from the following BrainBat?

CRY
LMKI

Can you find the missing letter in the sequence?
S - T - I - L - ? - T - F - Y - C

Can you find the missing number in the third row?
35 20 14
27 12 18
5 2 ?