Math Grade Six Probability

Introduction math grade six probability:

Generally probability is defined as the ratio of the number do ways of an event occur to the total number of possible outcomes, probability is used in the area of statistics, finance, gambling and science.

Probability formula for math grade six probabilities

The probability of event P (A)  =no of possible events n (a) /the total number of the events n(s)


Example problem 1 - math grade six probability


Suppose a bag contains the number up to 1 to 10, find the probability of sleeting a prime number?

Solution:

Bag contains the number from 1 to 10 here we have to know which the prime number between the numbers 1 to 10 is

So the prime number is 2.3,5,7

So the probability p (prime) =4/10 or 2/5

Example problem 2 - math grade six probability

A quiz competition is conducted by the royal club there are 25 members are attended in the competition, in that 7 members are selected in the competition find the probability of the selected members

Solution:

There are 25 members are attended in the quiz competition (total number), 7 members are selected so the probability of the past person is 7/25

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Example problem 3 - math grade six probability

Find the probability of the red, blue and green color ball?

Solution:

From the given diagram w e can calculate the total number of balls.
So total number of balls=number of red color ball + blue color ball + green color ball

Total number of red color ball=5

Total number of blue color ball=4

Total number of green color ball=2

So the total number of red, blue and yellow color ball is

Probability of taking red color ball=5/11

Probability of taking blue color ball=4/11

Probability of taking green color ball=2/11

Example problem 4 - math grade six probability:

Find the probability of blue, yellow and pink color?

Solution:

Here the rectangle is divided into 8 parts, so the total number of divided part is 8

Here pink color is 2

Number of part colored with blue color is 2

Number of part colored with yellow color is 4

So the probability of pink color 2/8

Probability of blue color 2/8

Probability of blue color 4/8