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

Mathematics
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

There is an explanation video available below.

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WAEC and NECO CBT Software for Computers and Laptops - Candidates, Schools, Centres, Resellers - 100% Offline -Download Now
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Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts