In a class of 60 students 30 opted for NCC, 32 opted for NSS and 24 opted for both NCC and NS. If one of these students is selected at random, find the probability that: The student opted for NCC or NSS.

In a class of 60 students, 30 opted for NCC, 32 opted for NSS and 24 opted for both NCC and NSS. If one of these students is selected at random, find the probability that(i) The student opted for NCC or NSS.(ii) The student has opted neither NCC nor NSS.(iii) The student has opted NSS but not NCC.

In a class of 60 students, 30 opted for NCC, 32 opted for NSS and 24 opted for both NCC and NSS. If one of these students is selected at random. (i) Find the probability that student opted for NCC or NSS. (ii) Probability that the student has opted neither NCC nor NSS.

In a class of 60 students, 40 opted for NCC, 30 opted for NSS and 20 opted for both NCC and NSS. If one of these students is selected at random, then the probability that the student selected has opted neither for NCC nor for NSS is

In a class of 60 students, 30 opted for Mathematics, 32 opted for Biology and 24 opted for both Mathematics and Biology. If one of these students is selected at random, find the probability that : (i) The students opted for Mathematics or Biology. (i) The students has opted neither Mathematics nor Biology. (iii) The students has opted Mathematics but not Biology.

A class has 20 girls and 16 boys. One student is selected at random. Find the probability that the student is a girl.

In a class of 50 students, 20 are boys and rest are girls. A student is selected at random. Find the probability of selecting a boy.

In a class, 30% students study English, 15% study Hindi and 10% study both English and Hindi. One student is selected at random. Find the probability that (i) He studies English if it known that he Hindi (ii) He studies Hindi if it is known that he studies English

A class has 12 boys and 4 girls. If three students are selected at random from the class, what is the probability that all will be boys?

In a hostel 60% of the students read Hindi news paper, 40% read English newspaper and 20% read both Hindi and English newspapers. A student is selected at random.Find the probability that she reads neither Hindi nor English news paper ?

In a class of 10 student, probability of exactly i students passing an examination is directly proportional to i^(2). If a student is selected at random, then the probability that he has passed the examination is