Question
400 patients in a hospital were investigated for kidney and lung disorders. It was found that 240 of them had kidney disorder, 80 had lung disorder and 40 of them had both. Find the number of patients who had.
(a) at least one of the two disorders.
(b) kidney disorder but not the lung disorder
(c) lung disorder but not the kidney disorder
(d) neither of the two disorders.
Solution
sollution not provided
Ans. (a) 280 (b) 200 (c) 40 (d) 120
