Concepts of probability ? Addition Rule & Rule of multiplication

Most students could also, where the rule of addition and multiplication are confused usually use probability. This article gives you a clear view on where we add and multiply the probabilities.

A student solves the following two questions as follows:
Problem: A boy is allowed to select a random number between the numbers from 1 to 999. What is the probability that the chosen number is divisible by 3 or 5, but not both?

First, find out how many numbersdivisible by 3. It's just (999 / 3 = 333).
So probably the chosen number is divisible by 3 = 333/999 = 1 / 3
Second, you find out how many numbers divisible by 5. It's just (999 / 5 = 199).
It is likely that selected number divisible by 5 = 199/999
The probability that the chosen number divisible by 3 or 5, but not both = 1 / 3 +199 / 999 = 532/999 is. ????? Adding principle

Problem: A coin and dice are thrown simultaneously. What is the probability that hehave head and three at once?

The probability of a head = ?
The probability of three = 1 / 6
The probability that three heads = 1 / 2 x 6.1 = 12.1 ???- ? principle of multiplication.

We also know why he used the principle in the first issue and the principle of multiplication in the second problem?

The approach depends on the ratio of events:

???????? Report events with the principle
ReciprocallyExclusive Events ???????- principle added
Principle of independent events multiply ?????????-

Mutually exclusive: we say that A and B are two events, intended to prevent, if B does not occur when it occurs, and vice versa.

Independent event, we say that A and B two events and is called independent if the outcome of an event A does not affect the results of the event B and vice versa.

While the first problem is aCase of mutually exclusive events is the number that is collected is divisible by 3 or 5, but not both, he used included the principle.

Since the problem is to throw a second case of independent events, or a cube and a coin are the events that are independent of each other, it uses the principle of increase.

Source: http://reference-future-concepts.chailit.com/concepts-of-probability-addition-rule-rule-of-multiplication.html

leann rimes melissa joan hart phish sylvia plath def leppard tim wakefield tim wakefield