each first year student in faculty of science AE funai has maths requirement A and a science requirement B. A pool of 100 students shows that 50 students have completed A, 35 students completed B and 25 students completed both requirements A and B.Use a venn diagram to find the number of students who have completed :(a)at least one of A and B (b)exactly one of A or B(c)Neither A nor B