Mathematics · Probability and Statistics
Which of the following statements regarding Probability Concepts and Combinations are CORRECT? I. The experiment of tossing a coin until the first Head appears represents a countably infinite sample space, which falls under discrete probability. II. In conditional probability, the probability of the sure event S given that an event B has occurred is equal to 1. III. The number of ways to select r items from n types when repetition is allowed and order is not important is calculated using the formula (n+r+1)Cr. IV. Two events A and B are mutually exclusive if their intersection is the empty set, which simplifies the addition rule to P(A ∪ B) = P(A) + P(B). Choose the most appropriate answer from the options given below:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
Share:
- 1I, III and IV Only
- 2II, III and IV Only
- 3I, II and IV Only✓
- 4I, II and III Only
Correct answer
I, II and IV Only
Download Single Question PDF
Save this question and verified answer as a clean study sheet with live clickable link.
👥
Share with Friends & Study Groups
Challenge your peer aspirants on WhatsApp or Telegram to solve this question!
Online Test Series
Start Free Mock Test →Preparing for Mathematics?
Practice full-length mock tests with real exam timers, instant score analysis, and all-India ranking.
Chapter Practice
Practice Probability and Statistics MCQs →Want more practice questions on Probability and Statistics?
Solve complete topic-wise tests with detailed solutions on GkGet.
Related Practice Questions
Recommended practice questions in Mathematics · Probability and Statistics