There are are five things wrong with this sentence; only geniuses will be able to to spot all of the mitstakes

What is the fastest way to double your money?

In four steps you need to move the word 'cold' From 'warm' by replacing one alphabet at a time such that every word formed at each step is acceptable in English Dictionary.

There are six people in a family namely M, N, O, P, Q and R.

R and O are brother and sister.

N is the brother of Q's husband.
P is the father of M and grandfather of R.

How many male members are in the family?

Can you solve the below tricky visual equation?

The dirtier I get, the whiter I look. Who am I?

Can you guess the name of the month by looking the below rebus ?

An infinite number of mathematicians are standing behind a bar. The first asks the barman for half a pint of beer, the second for a quarter pint, the third an eighth, and so on. How many pints of beer will the barman need to fulfill all mathematicians' wishes?

There was a minor accident with a doctor's son but the doctor noticed no major injury. After the treatment, the father of that doctors son is sitting with the son of the doctor without the doctor being in the room.

How can this be possible?

1 + 9 + 8 = ?
considering, 28 + 8 + 92 = 10