A man and a dog were going down the street. The man rode, yet walked. What was the dog’s name?

using four eights (8) and a one (1) and one mathematical symbol , create the number 100

Find the next number in the series below

21 32 54 87 131 ?

John was writing his first book. After saving the document, he locked his laptop with a password and mentioned some phrases for the hint box.

A friend of his tried opening his laptop but found out that it was password protected. Following is the hint that appeared.
1 mobile 3 books 2 roars 1 night 4 balls 2 lighters 1 ghost 1 hat 3 watches.

Can you help him in cracking the password?

Can you calculate the probability of getting a sum of six when a dice is thrown twice?

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

When 99 is considered higher than 100?

A person is found murdered in his Chamber. When the crime scene is investigated, the Investigator find out that there is a calendar on which the victim has written a few numbers with his blood. The numbers are 4, 11, 11 and 4.

There are four suspects in the murder, John, Jacob, Anna and Lee. Can you find out who is the murderer?

I have teeth but i don't bite. Who Am I ?

What is the fastest way to double your money?