What is the riddle which can be asked all day with a different correct answer each time.

Today is a very icy and cold morning in Newcastle. Mr Shearer, an office bus driver arrived to pick up the employees from the last stop. Shearer suddenly remembers that he needs to pick a newly joined 4miles to the north. Mr Shearer lost his direction compass, a few minutes later Shearer is able to figure that he is moving in the correct direction i.e. north. How did Shearer know that he is moving in the correct direction?

What is next number in the pattern below:

131 517 192 123 ?

You can hear me, but you can't touch or see me.

What am I?

Who has married many women but was never married?

What comes
Once in a Year
Twice in a Month
4 times in a Week
6 times in a Day

There are people and strange monkeys on this island, and you can not tell who is who (Edit: until you understand what they said - see below). They speak either only the truth or only lies.
Who are the following two guys?
A: B is a lying monkey. I am human.
B: A is telling the truth.

Can you find the odd number in the following?

2716, 4135, 5321 and 7145

Why is 6 afraid of 7?

If,
29 - 1 = 30
9 - 1 = 10
14 - 1 = 15

Based on similar logic, Can you prove that the below algebraic equation is true?
11 - 1 = 10 ?