Question

There is a bag with only red marbles and blue marbles.
The probability of randomly choosing a red marble is 7/9.
There are 42 red marbles in the bag and each is equally likely to be chosen.
Work out how many marbles in total there must be.

Answer 1

Answer:

do 7/9*42. then you will get answer

Answer 2

Probability helps us to know the chances of an event occurring. The total number of red marbles in the bag is (7×42)/9.

What is Probability?

Probability helps us to know the chances of an event occurring.

$\rm Probability=\dfrac{Desired\ Outcomes}{Total\ Number\ of\ outcomes\ possible}$

Given that there are 42 red marbles in the bag and each is equally likely to be chosen. Also, The probability of randomly choosing a red marble is 7/9. Therefore, the total number of red marbles in the bag is,

Number of red marbles = 7/9 × 42

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