These are sample practice MCQs created for exam preparation. These are NOT official exam questions.
A jar contains 4 red marbles and 6 blue marbles. If two marbles are drawn without replacement, what is the probability that both are red?
Question:
A jar contains 4 red marbles and 6 blue marbles. If two marbles are drawn without replacement, what is the probability that both are red?
A jar contains 4 red marbles and 6 blue marbles. If two marbles are drawn without replacement, what is the probability that both are red?
Options
Answer: (A) 2/15
Explanation:
Probability first marble is red = 4/10. Probability second marble is red given first was red = 3/9 = 1/3. Combined probability = (4/10) × (3/9) = 12/90 = 2/15.
Explanation:
Probability first marble is red = 4/10. Probability second marble is red given first was red = 3/9 = 1/3. Combined probability = (4/10) × (3/9) = 12/90 = 2/15.
👉 Want AI explanation? Open in MCQ App
Recommended articles
- Hppsc Previous Year Questions (2021–2025) Free Practice — Practice HPPSC Himachal Pradesh PSC Prelims Paper 1 Previous Year Questions (2021–2025) online at UPSC Quizroom. Bilingual Hindi-English, AI explanations,…
- Daily Upsc Mcq Strategy — '); animation: float 20s ease-in-out infinite; pointer-events: none; } @keyframes float { 0%, 100% { transform: translate(0%, 0%) rotate(0deg); } 50% {…
- Free Cat Previous Year Questions Guide — Master CAT 2025 with free previous year questions. Practice 1000+ PYQs, mock tests, and detailed solutions. Complete guide to CAT preparation using past…