The table above shows the distribution of recharge cards of four major GSM operators. What...

JAMB 2006

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?

A. 3/20
B. 1/4
C. 2/5
D. 3/4

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Correct Answer: Option C

Explanation

P(GTN) = 5/20
P(Qtel) = 3/20
∴P(GTN or Qtel) = (5/20) + (3/20)
= 8/20
= 2/5

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The table above shows the distribution of recharge cards of four major GSM operators. What...

Correct Answer: Option C

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