Mathematics/General Ability MCQs
Topic Notes: Mathematics/General Ability
MCQs and preparation resources for competitive exams, covering important concepts, past papers, and detailed explanations.
Plato
- Biography: Ancient Greek philosopher (427–347 BCE), student of Socrates and teacher of Aristotle, founder of the Academy in Athens.
- Important Ideas:
- Theory of Forms
- Philosopher-King
- Ideal State
1
A bag contains 11 balls, of which 3 are red. What is the probability of drawing a red ball?
Answer:
0.273
Step-by-step solution: 1. Probability = favourable outcomes / total outcomes. 2. Probability = 3 / 11 = 0.273. 3. Simplify the fraction to decimal form.
2
A bag contains 14 balls, of which 3 are red. What is the probability of drawing a red ball?
Answer:
0.214
Step-by-step solution: 1. Probability = favourable outcomes / total outcomes. 2. Probability = 3 / 14 = 0.214. 3. Simplify the fraction to decimal form.
3
A bag contains 15 balls, of which 3 are red. What is the probability of drawing a red ball?
Answer:
0.2
Step-by-step solution: 1. Probability = favourable outcomes / total outcomes. 2. Probability = 3 / 15 = 0.2. 3. Simplify the fraction to decimal form.
4
A bag contains 13 balls, of which 6 are red. What is the probability of drawing a red ball?
Answer:
0.462
Step-by-step solution: 1. Probability = favourable outcomes / total outcomes. 2. Probability = 6 / 13 = 0.462. 3. Simplify the fraction to decimal form.
5
A bag contains 15 balls, of which 6 are red. What is the probability of drawing a red ball?
Answer:
0.4
Step-by-step solution: 1. Probability = favourable outcomes / total outcomes. 2. Probability = 6 / 15 = 0.4. 3. Simplify the fraction to decimal form.
6
A bag contains 14 balls, of which 5 are red. What is the probability of drawing a red ball?
Answer:
0.357
Step-by-step solution: 1. Probability = favourable outcomes / total outcomes. 2. Probability = 5 / 14 = 0.357. 3. Simplify the fraction to decimal form.
7
A bag contains 13 balls, of which 5 are red. What is the probability of drawing a red ball?
Answer:
0.385
Step-by-step solution: 1. Probability = favourable outcomes / total outcomes. 2. Probability = 5 / 13 = 0.385. 3. Simplify the fraction to decimal form.
8
A bag contains 14 balls, of which 4 are red. What is the probability of drawing a red ball?
Answer:
0.286
Step-by-step solution: 1. Probability = favourable outcomes / total outcomes. 2. Probability = 4 / 14 = 0.286. 3. Simplify the fraction to decimal form.
9
A bag contains 12 balls, of which 4 are red. What is the probability of drawing a red ball?
Answer:
0.333
Step-by-step solution: 1. Probability = favourable outcomes / total outcomes. 2. Probability = 4 / 12 = 0.333. 3. Simplify the fraction to decimal form.
10
A bag contains 10 balls, of which 3 are red. What is the probability of drawing a red ball?
Answer:
0.3
Step-by-step solution: 1. Probability = favourable outcomes / total outcomes. 2. Probability = 3 / 10 = 0.3. 3. Simplify the fraction to decimal form.