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3 years ago

You randomly guess the answers to two questions on a multiple-choice test. Each question has three choices: A, B, and C.

Mathematics

2 answers:

shepuryov [24]3 years ago

8 0

Answer:

ai) 1/9

ii) 11.1%

b) option 1

Step-by-step explanation:

Out of three options, one would be correct

Both correct:

1/3 × 1/3 = 1/9

1/9 × 100 = 11.1%

b) if one is eliminated,

two options left with one correct

1/2 × 1/2 = 1/4

1/4 × 100 = 25%

kupik [55]3 years ago

6 0

Answer:

Hello,

This question I've just been jotting down, so I won't explain much. If you want more, just comment!

a. There is only one correct answer for both. Since each question has 3 outcomes, we will have 1 over 3(3). That's 1/9

Thus, a is 1/9.

(about 11.11%

b. If you eliminate one of the choices, then there will be two possible outcomes. We will have 1 over 2(2), so 1/4.

Thus, b is 1/4.

(a in options)

Hope this helps!

(I'm not sure if you just want these answered or the others.)

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Answer:

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Step-by-step explanation:

Let

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y ---> the number of games that Maryann has won

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Answer:

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