Question

In a survey of 600 students in a school 150 students were found to be taking tea and 225 taking coffee 100 were taking both tea and coffee. Find how many students were taking neither tea and coffee.

Answer 1

Step-by-step explanation:

here its not given that all students consume atleast tea or coffee or both so taking A U B as 600 will be wrong

Answer 2

Step-by-step explanation:

150 students were having tea

225 students were having coffee

100 were taking both tea & coffee

Now, n(C) + n(T) - n(CnT) = n(CuT)

n(CuT) = = 375 - 100 = 275

So required answer = 600-275 = 325