Question

One hundred students were asked whether they had taken course in

any of three areas, sociology, anthropology and history. The results

were:

45 had taken sociology, 38 had taken anthropology, 21 had

taken history, 18 had taken sociology and history, 9 had

taken sociology and anthropology, 4 had taken history and

anthropology and 23 had taken no course in any of three

areas.

Find :

(a) Draw a Venn diagram that will show the results of survey.

(b)Determine the number of students who had taken classes

in exactly (i) one of the areas (ii) two of the areas.​

Answer 1

Answer:

25÷20 and answer is right