A Scientist was fifty years old in the year 2000 but he was forty years old in the year 2010. How can this be possible?

PS: It has a logical answer.

What has many teeth, but cannot bite?

Which point will the car reach to go out?

A bomb exploded in a room full of married couples and no one died. How?

Can you find out the remainder when 3^300 is divided by 5?

A new Engineering building containing 100 offices had just been completed. John was hired to paint the numbers 1 to 100 on the doors. How many times will John have to paint the number nine (9)?

Decode below rebus
D
N
A
T
S , D

Replace the 'X' with any mathematical symbol to make the expression equal to 111.

18 X 12 X 2 X 3 = 111

What animal walks on four legs in the morning, two legs during the day, and three legs in the evening?

Oedipus, the king of Thebes, figured out the answer to the riddle:

Which digit occurred maximum times between the number 1 and 1000?