Question

In a lottery, there are 10 prizes and 25 blanks. A lottery is drawn at random. What is the probability of getting a prize?

A) 2/7 B) 5/7 C) 1/5 D) 1/2

Answer 1

Answer:

The answer is (C)-1/5

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Answer 2

QUESTION:

In a lottery, there are 10 prizes and 25 blanks. A lottery is drawn at random. What is the probability of getting a prize?

A) 2/7 B) 5/7 C) 1/5 D) 1/2

ANSWER:

We used the formula here ;

$probabilty(of \: an \: event) = \frac{no \: of \: favourable \: outcome}{total \: outcome}$

Now come to main question;

No of prizes = 10 (favourable outcome )

no of blanks = 25

total number of lottery cards = 10 + 25 = 35

we have to find probability of getting prize

so

by using the formula;

$p(getting \: a \: prize) = \frac{no \: of \: prizes}{total \: no \: of \: loter \: cards} \\ p(getting \: a \: prize) = \frac{10}{35} \\ p(event) = \frac{2}{7}$

FINAL ANSWER :

your answer is option A