Question

In a class of 50 pupils, it was found that 4 take maths and Bio only,3 take maths and Chem only and 6 take Bio and Chem only. Furthermore, 7 take maths alone, 5 take Bio alone and 8 take chem alone. If 2 take non of the above subjects, find : a) the number of pupils doing all the 3 subjects (3mks) ; b)the number of pupils taking maths and chem.(3mks)​

Answer 1

a) 31 pupils

b)18

Explanation:

you should create a Venn diagram to represent your information.Then after putting your information in correctly. For a) you'll add all the numbers in the Venn diagram including 2, which is outside the Venn diagram,then you'll get 29.. Subtract 29 from 50

I hope this helps