Question

A bag contains 75 marbles:35 are blue and 25 of these blue marbles are swirled. The rest of them are red, and 30 of the red ones are swirled. The marbles that are not swirled are clear. What is the probability of drawing (a) A blue marble (b) A blue swirled marble (c) A red clear marble.

Answer 1

Answer:

(a) 7/15

(b) 1/3

(c) 2/15

Hope it helps you.........

Answer 2

Answer:

a)7/15

b)1/3

c)2/15

Explanation:

Total number of marbles =75 (Total number of observations)

a)Total number of blue marbles=35 (favourable observations)

Let the event be A

P(A)=No. of favourable obs/Total no of observations - (1)

P(A)=35/75=7/15

Therefore the probability of getting a blue marble is 7/15

b)No. of favourable obs (blue swirled marble)=25

Let the event be B

P(B)=25/75 - From(1)

P(B)=5/15

c)No. of favourable obs (red clear marbles)=10

Let the event be C

P(C)=10/75 - From(1)

P(C)=2/15