Question

In a survey of 170 people, it has been found that 90 eatidly, 85 eat vada and 65
eat dosA. 50eat idly &vada, 30eat vada&dosa, 40 eat idly &dosa and 20 eat all
the three. How many eat exactly one variety?
Select one:
O a. 55
O b. 35
O O c. 50
O d. 60​

Answer 1

option c is correct answer