Find The Next Number In The Sequence

30 10 15 13 0 16 -15 ?

Distances from you to certain cities are written below.

BERLIN 200 miles

PARIS 300 miles

ROME 400 milesAMSTERDAM 300 miles

CARDIFF ??? miles

How far should it be to Cardiff ?

A new Engineering building containing 100 offices had just been completed. John was hired to paint the numbers 1 to 100 on the doors. How many times will John have to paint the number nine (9)?

Living above a star, I do not burn
Eleven friends and they do not turn
I can just be visited in a sequence, not once or repeatedly
PQRS are my initials
Can you tell my name accurately?

A mad serial killer kidnaps people and forces them to play the game of 2 pills with them, In this game, there are pills in the table and one of them is normal pill while the other one is deadly poisonous.
The victim will choose one pill and the killer will pick the other pill and both simultaneously will swallow the pill with water.
victim dies every time.

One day the serial killer kidnaps the Joseph and forces him to play the same game with him.

Joseph solves the mystery of the two pills and remains alive.

Explain?

A certain street contains 100 buildings. They are numbered from 1 to 100. How many 9's are used in these numbers?

Count the squares in the matchstick puzzle below?

The picture shows the dice results in each couple of throws. If they are actually following a pattern, can you find out the missing one?

I never stop running even when I standstill. If I am formed by joining two identical bodies together, can you guess who I am?

Find the last number in the series below:

voN luJ yaM raM ---