Question

In a lottery, there are 15 prizes and 10 blanks. A lottery is drawn at random. What is the probability of not getting a prize?

Answer 1

Answer:

Step-by-step explanation :

Total number of outcomes n(S): 10 + 15 = 25

Total number of blanks ( not prize )

n(E) : 10

Probability of not getting any prize

P(E) = n(E) / n (S)

= 10 / 25

= 2 / 5 or 0.4

Answer 2

Answer:

Probability of not getting a prize is 2/5

Step-by-step explanation:

Total no. of events= no. of prizes + no. of blanks

                                 = 15 +10 =25

As we know that,

Probability= favourable condition / total outcomes

Probability of not getting prize= no. of blanks / total events

                                                  = 10 /25

                                                   =(10÷5)/(25÷5)=2/5