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 the student has opted for exactly one of 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 the student opted for NCC and NSS.

In a class of 60 students.30 opted for NCC,32 opted for NSS and 24 opted for both.If one of these students is selected at random,find the probability that-the student has opted NSS but not NCC.

In a class of 60 students, 30 selected for NCC, 32 selected for NSS and 24 selected for both NCC and NSS. If one of these students is selected at random,find the probability that:the students has selected neither NCC nor NSS.

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

In a class, 60% of the students know lesson I, 40% know lesson II and 20% know I and II. A student is selected of random. The probability that the student does not know lesson I and lesson II is

In an examination.30% of students failed in Maths,20% of students failed in Chemistry and 10% of students failed in both Maths & Chemistry.A student is selected at random.Find the probability that (i) The student has failed in Maths.

In an examination.30% of students failed in Maths,20% of students failed in Chemistry and 10% of students failed in both Maths & Chemistry.A student is selected at random.Find the probability that (ii) The student has failed in Chemistry

In an examination.30% of students failed in Maths,20% of students failed in Chemistry and 10% of students failed in both Maths & Chemistry.A student is selected at random.Find the probability that the student has failed in Maths,it is known that he has failed in Chemistry.

In a ladies hostel,60% of the students read Hindi newspaper,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 newspapers.

In class XI of a school 40% of the students study Mathematics and 30% study Biology, 10% of the class study both Mathematics and Biology. If a student is selected at random from the class, find the probability that he will be studying mathematics or Biology.