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There are 10 balls in a bag. The balls are the same apart from their colour. Of the 10 balls, 3 are black, 5 white, 2 red. What is the probability of picking a white ball from the bag.

To calculate the probability assume it is equally likely to choose any of the 10 balls. This is reasonable as we are told that the balls are the same apart from their colours. If we label each ball by number...
AS
Answered by Alvin S. • Maths tutor
8428 Views

Why were rallies in Nazi Germany important?

During the Nazis' years in power between 1933 and 1945, Joseph Goebbels was given the very important task of making sure that the Nazi message was effectively spread, through the use of propaganda. One of Go...
FW
Answered by Francesca W. • History tutor
25745 Views

In which way is a supervolcano different from a volcano and what are the likely consequences of a super volcano eruption?

Super volcanoes are much bigger than normal volcanoes, usually erupting at least 1000 cubic km of material in a single event and far less frequently than normal volcanoes. Normal volcanos erupt nearer to 1 c...
JH
Answered by Jack H. • Geography tutor
7820 Views

How do you test for alkenes and alkanes?

Mix with bromine water (orange), if a double bond is present (alkenes) then the bromine water will be decolourised.
EP
6148 Views

What is the difference between meiosis and mitosis?

Meiosis - cell division to form gametes (sex cells), each gamete contains half the number of chromosomes than in a normal cell. Mitosis - division of body cells during normal growth, each cell contains a ful...
EP
Answered by Elizabeth P. • Biology tutor
5385 Views