In a class 30 of the students opt for Math 20 opt for Computers and 10 opt for both A student is sel...........

Quantitative Aptitude ( CCS) Probability

In a class 30% of the students opt for Math, 20% opt for Computers and 10% opt for both. A student is selected at random, find the probability that he has opted either Math or Computers ?

3/5

2/5

4/9

6/11

छोटे Courses बड़े Results

Master Probability

Prepare through Micro-courses

Try Now

Explanation:

Answer & Explanation
2/5
Explanation:
Prob. of math = 30/100 = 3/10, Prob. of computers = 20/100 = 1/5, prob. for both = 10/100 = 1/10
So required prob. = 3/5 + 1/5 – 1/10