Question

a glass jar contain 1 red 3 green 2 blue and 4 yellow marbles.if single marble is chosen at random from the jar what is the probability that it is yellow or green?​

Answer 1

Answer:

3/10

Step-by-step explanation:

3/10

Answer 2

Answer:

Concept:

Probability:

• The area of mathematics known as probability deals with numerical representations of the likelihood that an event will occur or that a proposition is true.
• An event's probability is a number between 0 and 1, where, roughly speaking, 0 denotes the event's impossibility and 1 denotes certainty.
• Probability of Expected Outcome P(A) is equal to ratio of the number of favorable outcomes n(A) to the total Number of possible outcomes n(S).

                            $P(A) = \frac{n(A)}{n(S)}$

Given:

A glass jar contains,

• Red marbles $= 1$
• Green marbles $=3$
• Blue marbles $=2$
• Yellow marbles $=4$

To Find:

We need to find the probability that it is yellow or green marbles.

Solution:

Total Number of marbles $n(S)= 1+3+2+4 =10$

$n(A)$ is number of yellow and green marbles.

Number of yellow marbles $=4$

Number of green marbles $=3$

$n(A)= 4 +3 =7$

$P(A) = \frac{n(A)}{n(S)}$

$P(A) = \frac{7}{10}$

$P(A) = 0.7$

The Probability of getting yellow or green marbles is $0.7$

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