Question

A exam paper contains 8 questions .4 important A and 4 in part b .Examiners are required to answer 5 question.In hoe many ways this can be done if
i)there is no restrictionof choosind a number of question in either parts
ii)Atleast two questions from part A must be answered

Answer 1

Answer:

• in part A atleast two questions must be answered
• so first choose easy questions i.e.that can write in our own words also choose 2 easy questions from 4 questions in part A
• next choose easy questions i.e.3 in part B