How many people must be gathered together in a room, before you can be certain that there is a greater than 50/50 chance that at least two of them have the same birthday?

A professor thinks of two consecutive numbers between 1 and 10.
'A' knows the 1st number and 'B' knows the second number

A: I do not know your number.
B: Nor do I know your number.
A: Now I know.

What are the four solutions for this?

When my father was 31 I was 8. Now he is twice as old as me. How old am I?

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.

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

Which five letter word can be added at the end of below word to form a
valid word?

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A shepherd had 18 sheep, out of which, all but ten died.

Can you tell us how many sheep was he left with?

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

How many words can a quill made with the feather of a pigeon write with a 100ml bottle of black ink?

A police officer was passing by when he saw a guy hiding. He walked up to him and genially asked, "What is your name?"

"Shut up!" the boy responded.

"Where are your manners?" asked the outraged police officer.

"Up that tree," said the boy discourteously, directing to a neighbouring tree.

You're looking for trouble, aren't you?" said the police officer.

"No, trouble is looking for me!" the boy answered solemnly.

Why is the boy behaving like this?