Name a key which is hardest to turn.

In 1990, a person is 15 years old. In 1995, that same person is 10 years old. How can this be?

Find the next number in the series below

21 32 54 87 131 ?

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

Who always enjoys poor health?

Mr Red Lives in the red house.
Mr Green Lives in the greenhouse.
Mr Yellow Lives in the yellow house.

Who lives in the Whitehouse?

What is the word or phrase below?
R | E | A | D

A few friends are enjoying their sea voyage in a boat full of apples. On the way, they felt hungry and thus decided to eat the apples. Together, they ate two dozen of apples. When they have eaten the apples, will there be any change in the water level?

In one of the popular batman series movie "Batman Forever", there was a riddle that goes like "Tear me off and then scratch my head and I was red then and now I am back. Who am I?

What does this rebus means ?

PROG WORKRESS