( Challenging Questions
1. There are 5 red and 3 green pens in a bag. There
are 2 red and 6 green pens in another bag. A pen
is picked up at random from one bag. Using the
following instructions, find the probability that
the pen picked up :
(a) from one bag is red.
(b) from another bag is red.
(c) from either of the bags is red.
Answers
Answered by
7
Step-by-step explanation:
a) probability
5/8
b) probability
2/8
1/4
c) probability
7/8
hope it is correct
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Answered by
13
a)5/8
b)1/4
c) 0
Step-by-step explanation:
sample space for one bag ={1 red,2red,3red,4red,5red,1green,2green,3green}
therefore Sample points n(S1)= 8 balls
Sample space for another bag={ 1red,2red,6 green}
now let A event be pen picked by one bag is red
Event A={ 5 red balls}
n(A)= 5
p(A) = n(A)/n(S1)
5/ 8
therefore in one bag is 5/8 probability.
Now let Event B={ 2 red }
n(B)= 2
p(B)= n(B)/ n(S2)
=2/8
= 1/4
Event C ={ 0}
p(C)= 0
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