How many times can you subtract the number two from the number fifty?

Can you decipher these quotes by Albert Einstein?
Blf xzm mvevi hloev z kilyovn lm gsv ovevo lm dsrxs rg dzh xivzgvw.

I never stop running even when I standstill. If I am formed by joining two identical bodies together, can you guess who I am?

There were two grandmothers and their two granddaughters.
There were two husbands and their two wives.
There were two fathers and their two daughters.
There were two mothers and their two sons.
There were two maidens and their two mothers.
There were two sisters and their two brothers.
Yet there are only six, who are buried here,
All are born legitimate and relationships clear.
How can this happen?

Which word does the below Plexor means ?

The cream is heavier than Milk. True or False?

Get total of 120 by using five zeros 0,0,0,0,0 and any one mathematical operator.
Do you ?

You can see three almost identical images below. Can you spot the odd one out from them?

John can fit six large chocolate boxes or nine small chocolate boxes into a carton. How many cartons will he require to put sixty-six chocolate boxes into?

A man dies of old age on his 25 birthday. How is this possible?