In a class of 50 students, 28 opted for NCC, 30
opted for NSS and 18 opted both NCC and NSS.
One of the students is selected at random. Find
the probability that
(i) The student opted for NCC but not NSS.
(ii) The student opted for NSS but not NCC.
(iii) The student opted for exactly one of them.

Matching exercise

    
Match the items on the right to the items on the left.
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