The table above shows the distribution of recharge cards of four major GSM operators. What is the probability that a recharge card selected at random will be GTN or Qtel?
- 3/20
- 1/4
-
2/5
- 3/4
The correct answer is: C
Explanation
P(GTN) = 5/20P(Qtel) = 3/20
∴P(GTN or Qtel) = (5/20) + (3/20)
= 8/20
= 2/5