Find The Next Number In The Sequence

30 10 15 13 0 16 -15 ?

Can you find the mistake in the below statement?

Can you identify the direction in which this bus is moving; left or right?

Hint: The bus is moving on the roads of London.

One is to three as three is to five and five is to four and four is the magic number.
What is the pattern?

Mr Red Lives in the red house.
Mr Green Lives in the greenhouse.
Mr Yellow Lives in the yellow house.

Who lives in the Whitehouse?

It has five wheels, though often think four, You cannot use it without that one more, You can put things in it, you can strap things on top, You can't find it in the market, but you can still go shop. What is it?

For an extra income, John decided to work at a Hotel for one hour daily. The manager offers him that they will pay him $11 after every 11 days.
However, John offered a different proposition to the manager. The offers stand as:
He will be paid just a penny on his first day.
Two pence will be paid on the second day,
Four pence will be paid on the third day.
And so on till the 11th day.

Should the Hotel manager accept his offer?

On a charity event in Russia, Murray beat Djokovic by winning six games and losing three games.
Note: There is a total of 5 service breaks(one who serve lost the game).
Who served first, Djokovic or Murray?

When it's bad luck to meet a black cat?

Can you replace the question mark with the correct number?