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From a box containing 2 red, 6 white, and 5 black balls, a ball is...

Mathematics
WAEC 2025

From a box containing 2 red, 6 white, and 5 black balls, a ball is randomly selected. What is the probability that the selected ball is black?

  • A. \(\frac{5}{13}\)
  • B. \(\frac{5}{11}\)
  • C. \(\frac{2}{13}\)
  • D. \(\frac{5}{6}\)
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Correct Answer: Option A
Explanation

Total balls = 2 + 6 + 5 = 13

Pr(black) = \(\frac{5}{13}\)

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WAEC offline past questions - with all answers and explanations in one app - Download for free
WAEC and NECO CBT App for Mobile Devices - Candidates, Schools, Centres, Resellers - 100% Offline -Download Now
Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
WAEC and NECO CBT Software for Computers and Laptops - Candidates, Schools, Centres, Resellers - 100% Offline -Download Now
Post UTME Past Questions Agent
WAEC Past Questions, Objective & Theory, Study 100% offline, Download app now - 127076
WAEC offline past questions - with all answers and explanations in one app - Download for free
Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
WAEC Past Questions, Objective & Theory, Study 100% offline, Download app now - 127076
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