Q 36 Considering the knowledge of the students, the probability of Raju answering a question wrong is 3/10 and that of Ramu is 3/8. What is the probability that
both of them answer the question correctly?
Ops: A.
B.
C.
D.
7/16
9/80
3/16
21/80
Answers
Answer:
7/16
Explanation:
probability of raju answering correctly =1-3/10
=7/10
probability of ramu answering correctly=1-3/8
=5/8
probability of both being correctly=(7/10)*(5/8)
=7/16
Given,
probability of Raju answering a question wrong is 3/10
probability of Ramu answering a question wrong is 3/8
To find,
the probability that both of them answer the question correctly?
Solution,
probability of Raju answering correctly will be the highest value of probability, that is 1, subtracted by the numerator of the value given.
Which means,
= 1-3/10
= (10 - 3)/10
=7/10
probability of Ramu answering correctly will be the highest value of probability, that is 1, subtracted by the numerator of the value given.
Which means,
= 1-3/8
= (8-3)/8
=5/8
Now to get the probability of both getting correct answers will be found by multiplying the values of the probability of the correct answers of both people.
probability of both being correctly=(7/10)*(5/8)
=7/16
Thus, the probability that both of them answer the question correctly is (A) 7/16