Question

The probability of picking a red marble from a bag is 2/7 what are the odds against picking a red marble.

Answer 1

Remember that the following probability statement is true:

Given $P(A)$, the odds against $P(A)$ (defined as $P(A^C)$ are defined below:

$P(A^C) = 1 - P(A)$

In this case, we are given the probability of picking a red marble, which we define as $\frac{2}{7}$. The odds of picking against a red marble would then be:

$1 - \frac{2}{7} = \frac{5}{7}$

Our answer is 5/7.

Answer 2

The answer is 5/7 because if 2/7 is with the red marble then the res would be against the red marble and that is 5/7

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