Your School's Whatsapp Group - Join Us now
Post UTME Past Questions Agent
  1. Home
  2. Classroom
  3. Mathematics
  4. WAEC 2016
  5. A bag contains 5 red...

A bag contains 5 red and 4 blue identical balls. Id two balls are selected...

Mathematics
WAEC 2016
A bag contains 5 red and 4 blue identical balls. Id two balls are selected at random from the bag, one after the other, with replacement, find the probability that the first is red and the second is blue
  • A. \(\frac{2}{9}\)
  • B. \(\frac{5}{18}\)
  • C. \(\frac{20}{81}\)
  • D. \(\frac{5}{9}\)
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
Post UTME Past Questions Agent
Correct Answer: Option C
Explanation
n(red balls) = 5

n(blue balls) = 4

n(\(\iff\)) = 9

Hence, prob (R1, B2)

= \(\frac{5}{9} \times \frac{4}{9}\)

= \(\frac{20}{81}\)
Previous Next
Go back to Maths classroom

Report an Error Ask A Question Download App
Your School's Whatsapp Group - Join Us now
Post UTME Past Questions Agent
Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
{{ text }}

Contributions ({{ comment_count }})

Please wait...

{{ settings.no_comment_msg ? settings.no_comment_msg : 'There are no comments' }}

Quick Questions

Post your Contribution

Please don't post or ask to join a "Group" or "Whatsapp Group" as a comment. It will be deleted. To join or start a group, please click here

{{ quote.posted_by.display_name }}
{{ settings.form_textarea_description }}
 
Your School's Whatsapp Group - Join Us now
WAEC and NECO CBT App for Mobile Devices - Candidates, Schools, Centres, Resellers - 100% Offline -Download Now
Post UTME Past Questions Agent
WAEC and NECO CBT Software for Computers and Laptops - 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
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
Your School's Whatsapp Group - Join Us now