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Pani-rosa [81]
3 years ago
12

Here is a probability scale:

Mathematics
2 answers:
choli [55]3 years ago
7 0

Answer:

0.25

Step-by-step explanation:

3 white counters and 1 black counter,

3+1 = 4

the chances of you choosing the black counter is 1/4

1/4 can also be written as 0.25.

lawyer [7]3 years ago
7 0

Answer:

The probability of choosing a black counter is 0.25.

Also the picture is attached for the mark on scale.

Step-by-step explanation:

Probability is the likeliness of occurrence of an event.

Given

There are three white and 1 black counter in the bag which means our sample space contains 3+1 = 4 elements

n(S) = 4

Let B be the event that the drawn out counter is black. As there is only one black counter

n(B) = 1

The probability of choosing a black counter is:

P(B) = \frac{n(B)}{n(S)}\\P(B) = \frac{1}{4} = 0.25

Hence,

The probability of choosing a black counter is 0.25.

Also the picture is attached for the mark on scale.

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Step-by-step explanation:

This is a triangle with height (red dotted line) given.

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