Question

in a class of 100students, 50 arre studying Geography, 40 are studying mathematics while 20 are studying both.Find the probability that the student chosen at random is studying neither geography nor mathematics​

Answer 1

Answer:

40% or 40/100 which reduces to 2/5

Step-by-step explanation:

total of 100 students

20 are studying both...

only geography : 50 - 20 = 30

only math : 40 - 20 = 20

geography + math + both + neither = 100

30 + 20 + 20 + x = 100

60 + x = 100

x = 100 - 60

x = 40....so 40 out of 100 students are studying neither geography or math.

P(neither math or geography) = 40/100 = 0.4 = 40% <==