A box contain 5 red marble, 15 blue marbles and 25 green marbles. 5 marble are drawn at random from the box, the probability that all will non green is
CBSE 2024-2025 NCERT Maths Class 11th Chapter 14 Probability introduces students to the mathematical study of uncertainty and chance. This chapter covers fundamental concepts such as random experiments, outcomes, sample space, events and probability of events. MCQ questions test students’ ability to apply probability rules, analyze different scenarios, and calculate probabilities accurately. Practicing these questions enhances logical reasoning, problem-solving skills and mathematical thinking. A strong understanding of probability is essential for higher studies in mathematics, statistics and science. Regular MCQ practice improves accuracy, builds confidence and prepares students for exams and real-world applications like finance, data science, and risk management.
Choice (c) is correct.
Total number of marbles in the box = 5 + 15 + 25 = 45
Number of non-green marbles = 5 + 15 = 20
Probability (all marbles are non-green) = ²⁰C₅/⁴⁵C₅
This question related to Chapter 14 maths Class 11th NCERT. From the Chapter 14: Probability. Give answer according to your understanding.
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