Question
Download Solution PDFA bag contains 5 red balls, 4 blue balls, and 6 green balls. Three balls are randomly drawn from the bag. Then find the probability that all three balls are of the same color.
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFGiven:
5 red balls, 4 blue balls, 6 green balls
Formula used:
Probability = Required outcome/Total outcome
nCr = n!/r!(n – r)!
Calculation:
Probability of getting three red ball = 5C3
Probability of getting three blue balls = 4C3
Probability of getting three green balls = 6C3
Required outcome = 5C3 + 4C3 + 6C3 = 10 + 4 + 20 = 34
Total outcomes = 15C3 = 455
∴ Probability = 34/455
Last updated on Jun 17, 2025
-> IBPS RRB Clerk Revised Exam Dates have been announced on 16th June 2025.
-> According to the official notice, the Prelims Examination is scheduled to be conducted on 6th, 7th, 13th and 14th December 2025.
-> The Mains Examination is scheduled for 1st February 2026.
-> IBPS RRB Clerk 2025 Notification is expected to be released soon.
-> Candidates with a Graduation degree in any discipline are eligible for the recruitment process.
-> The selection process includes Prelims and Mains examinations.
-> Prepare for the Exam with IBPS RRB Clerk Previous Year Papers. Check IBPS RRB Clerk Exam Analysis.
-> Attempt Free Banking Current Affairs Mock Test here