Question

Q.3. A box contains 4 red balls, 4 green balls and 7 white balls. What is the probability that a ball drawn is either red or white?

Answer 1

Answer:

11/15

Explanation:

Because there are total 15 balls and ball can be red or white so red and white are 11 balls

Answer 2

Solution:

Given:

=> Red balls = 4

=> Green balls = 4

=> White balls = 7

=> Total ball = 15

To Find:

=> Probability of getting either red of white.

Formula used:

$\sf{\implies Probability = \dfrac{Number\;of\;favorable\;outcomes}{Number\;of\;total\;outcomes}}$

So,

$\sf{\implies Probability\;of\;getting\;either\;red\;or\;white=\dfrac{Number\;of\;favorable\;outcomes}{Number\;of\;total\;outcomes}}$

$\large{\boxed{\boxed{\sf{\implies Probability = \dfrac{11}{15}}}}}$

Extra Info:

What is Probability?

• Probability is the likelihood /chances of a given event's occurence which is expressed as a number between 1 and 0.
• Probability P (E) of an event E is given by $\large{\boxed{\boxed{\sf{P(E) = \dfrac{Number\;of\;favorable\;outcomes}{Total\;Numbers\;of\;outcomes}}}}}$