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Dima020 [189]
2 years ago
11

Olivia guessed on the last three questions on her science quiz. If each question that had four choices, what is the probability

that she got all three correct?
Mathematics
2 answers:
Masteriza [31]2 years ago
7 0
=0.25x0.25x0.25
=0.0156
AveGali [126]2 years ago
4 0

Answer:

25% or 1/4

Step-by-step explanation:

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Evaluate the expression 11C4.
kicyunya [14]

The correct answer is: 330

Explanation:

The formula for combination is given as follows:

^nC_r = \frac{n!}{r! (n-r)!} --- (1)

Where n = 11

r = 4

Plug in the values in equation (1) and calculate:

^nC_r = \frac{n!}{r! (n-r)!} \\ ^{11}C_{4} = \frac{11!}{4! (11-4)!} \\ ^{11}C_{4} = \frac{11*10*9*8*(7!)}{4! (7)!} \\ ^{11}C_{4} = \frac{11*10*9*8}{4!} \\ ^{11}C_{4} = \frac{11*10*9*8}{4*3*2*1} \\ ^{11}C_{4} = 330 \\

Hence the correct answer is 330.

8 0
3 years ago
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Answer:

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Step-by-step explanation:

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