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
11
A bag contains 11 balls, of which 5 are red. What is the probability of drawing a red ball?
Answer:
0.455
Step-by-step solution: 1. Probability = favourable outcomes / total outcomes. 2. Probability = 5 / 11 = 0.455. 3. Simplify the fraction to decimal form.
12
A bag contains 13 balls, of which 4 are red. What is the probability of drawing a red ball?
Answer:
0.308
Step-by-step solution: 1. Probability = favourable outcomes / total outcomes. 2. Probability = 4 / 13 = 0.308. 3. Simplify the fraction to decimal form.
13
A bag contains 10 balls, of which 6 are red. What is the probability of drawing a red ball?
Answer:
0.6
Step-by-step solution: 1. Probability = favourable outcomes / total outcomes. 2. Probability = 6 / 10 = 0.6. 3. Simplify the fraction to decimal form.
14
A bag contains 11 balls, of which 6 are red. What is the probability of drawing a red ball?
Answer:
0.545
Step-by-step solution: 1. Probability = favourable outcomes / total outcomes. 2. Probability = 6 / 11 = 0.545. 3. Simplify the fraction to decimal form.
15
A bag contains 15 balls, of which 4 are red. What is the probability of drawing a red ball?
Answer:
0.267
Step-by-step solution: 1. Probability = favourable outcomes / total outcomes. 2. Probability = 4 / 15 = 0.267. 3. Simplify the fraction to decimal form.
16
A bag contains 10 balls, of which 4 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 = 4 / 10 = 0.4. 3. Simplify the fraction to decimal form.
17
A bag contains 10 balls, of which 5 are red. What is the probability of drawing a red ball?
Answer:
0.5
Step-by-step solution: 1. Probability = favourable outcomes / total outcomes. 2. Probability = 5 / 10 = 0.5. 3. Simplify the fraction to decimal form.
18
A bag contains 12 balls, of which 6 are red. What is the probability of drawing a red ball?
Answer:
0.5
Step-by-step solution: 1. Probability = favourable outcomes / total outcomes. 2. Probability = 6 / 12 = 0.5. 3. Simplify the fraction to decimal form.
19
A bag contains 12 balls, of which 3 are red. What is the probability of drawing a red ball?
Answer:
0.25
Step-by-step solution: 1. Probability = favourable outcomes / total outcomes. 2. Probability = 3 / 12 = 0.25. 3. Simplify the fraction to decimal form.
20
A bag contains 12 balls, of which 5 are red. What is the probability of drawing a red ball?
Answer:
0.417
Step-by-step solution: 1. Probability = favourable outcomes / total outcomes. 2. Probability = 5 / 12 = 0.417. 3. Simplify the fraction to decimal form.