3 years ago

Express 5% as a decimal

Mathematics

1 answer:

IRINA_888 [86]3 years ago

6 0

Answer:

.05

Step-by-step explanation:

you divide 5 by 100 which makes it .05

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3 years ago

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Answer:

Number of Questions =3

Probability of giving a correct answer

$=\frac{1}{3}$

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Probability of giving all correct answers

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Probability that at least one of them is correct

$=_{1}^{3}\textrm{C}\\\\=\frac{3!}{(3-1)! \times1!}\\\\=3 \text{ways}\\\\=\frac{1}{3} \times \frac{1}{3} \times \frac{1}{3} \\\\=\frac{1}{27}$

Probability that two of them is correct

$=_{2}^{3}\textrm{C}\\\\=\frac{3!}{(3-2)! \times2!}\\\\=3 \text{ways}\\\\=\frac{2}{3} \times \frac{2}{3} \times \frac{2}{3} \\\\=\frac{8}{27}$

Probability that all of them is correct

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So, Required probability

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3 years ago