Question

01. A college offers courses in Biology and Compute
Science 45 students select computer Science, 160 selec
Biology, and 35 select both How many students study atleas
one of these two subiect
(A) 175
(3) 20​

Answer 1

Step-by-step explanation:

n(B) = 160

n(C) = 45

n(B nC) =35

atleast one = B or C or both = n(B U C)

n(B U C) = n(B) + n(c) - n(B n C)

= 160 +45 -35 = 170