Question

ur involves using a spinner first. Then, if
ng passage and answer the question o
Diwali Fair
A game in a booth at a Diwali Fair involves using a spm
er is allowed to pick a
er stops on an even number, the player is allow
marble from a bag. The spinner and the marbles
represented in Figure-9.
Prizes are given, when a black marble is picked. Shweta p
once.
iner and the marbles in the bag are
marble is picked. Shweta plays the game
Figure-9
1. What is the probability that she will be allowed to pick a marble
from the bag ? Ź
2. Suppose she is allowed to pick a marble from the bag, what is the
probability of getting a prize, when it is given that the bag contains
20 balls out of which 6 are black?
​

Answer 1

Answer:

P( getting chance to pick a marble)=5/6

P( getting a prize)=6/20=3/10

Answer 2

Given : A game in a booth at a Diwali Fair using Spinner . Prizes are given when black marble is picked

To find : Probabilities

Solution:

allowed to pick a Marble if spinner stops at even number

Number on spinners   1, 2 , 4 , 6 , 8 , 10

n(S) = 6

E = even number  = 2 , 4 , 6 , 8 , 10

n(E) = 5

Probability that She will be allowed to pick Marble = n(E)/n(S)

= 5/6

Total  Marbles = 20

Black  Marbles =  6

Probability of getting a prize  =  6/20  = 3/10

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