Solve the equation by replacing the alphabet with numbers.

MOM + MOM + NO = BOOK=

In the city of Brain Teasers, 5% of people do not list their phone numbers. Now if we select random 100 people from the phone directory, then how many people selected will have unlisted phone numbers?

You enter your friend's room. He is not in his room. Although you see that on the bed there are two dogs, five cats, two giraffes and three pigs. Also, a couple of chickens and ducks are flying in the room.

Calculate the number of legs standing on the floor.

Is the statement valid that it does not matter how much older a sibling is, eventually the younger one will be half as old as the older one?

My cousin lives in one story house in Antarctica. His house is made the of-of sandstone. what is the color of stairs?

How many letters are in the alphabet?

Look at the picture and find out which square is not linked with any of the other squares.

A sundial has the fewest moving parts of any timepiece. Which has the most?

Using the clues below, what four numbers am I thinking of?

The sum of all the numbers is 31.
One number is odd.
The highest number minus the lowest number is 7.
If you subtract the middle two numbers, it equals two.
There are no duplicate numbers.

It's a test that will check your IQ.

Suppose you have one 11 minute hourglass and one 13 minute hourglass.

Can you measure exactly fifteen minutes using them ?