Question

pls help.... bit faster... plsss
one box contains 30 Perls in which green and red in colour. if we take 1 from it, the probability to get green colour is 2/5 then what is the number of green? ) *

1 point

a) 18

b) 12

c) 8

d) 20





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Answer 1

Answer:

b) 12

Step-by-step explanation:

The are 30 Perls in the box

Probability of getting one out of 30 Perls is 1/30

If there are x amount of green Perls, then probability of getting a green Perl is x*1/30

Now, if the probability of getting green is 2/5 = x/30,

Then we can find x as: x= 2*30/5= 12

The answer is 12 green Perls

Option b) 12 is correct one