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
31
If 15 : 18 :: 102 : x, find x.
Answer:
122.4
Step-by-step solution: 1. Use the property of proportions: a/b = c/x. 2. Cross-multiply: x = (b * c) / a = (18 * 102) / 15. 3. Compute x = 122.4.
32
If 16 : 21 :: 286 : x, find x.
Answer:
375.38
Step-by-step solution: 1. Use the property of proportions: a/b = c/x. 2. Cross-multiply: x = (b * c) / a = (21 * 286) / 16. 3. Compute x = 375.38.
33
If 18 : 20 :: 206 : x, find x.
Answer:
228.89
Step-by-step solution: 1. Use the property of proportions: a/b = c/x. 2. Cross-multiply: x = (b * c) / a = (20 * 206) / 18. 3. Compute x = 228.89.
34
If 16 : 18 :: 244 : x, find x.
Answer:
274.5
Step-by-step solution: 1. Use the property of proportions: a/b = c/x. 2. Cross-multiply: x = (b * c) / a = (18 * 244) / 16. 3. Compute x = 274.5.
35
If 17 : 21 :: 218 : x, find x.
Answer:
269.29
Step-by-step solution: 1. Use the property of proportions: a/b = c/x. 2. Cross-multiply: x = (b * c) / a = (21 * 218) / 17. 3. Compute x = 269.29.
36
If 16 : 22 :: 160 : x, find x.
Answer:
220.0
Step-by-step solution: 1. Use the property of proportions: a/b = c/x. 2. Cross-multiply: x = (b * c) / a = (22 * 160) / 16. 3. Compute x = 220.0.
37
If 12 : 20 :: 194 : x, find x.
Answer:
323.33
Step-by-step solution: 1. Use the property of proportions: a/b = c/x. 2. Cross-multiply: x = (b * c) / a = (20 * 194) / 12. 3. Compute x = 323.33.
38
If 12 : 19 :: 110 : x, find x.
Answer:
174.17
Step-by-step solution: 1. Use the property of proportions: a/b = c/x. 2. Cross-multiply: x = (b * c) / a = (19 * 110) / 12. 3. Compute x = 174.17.
39
If 12 : 21 :: 138 : x, find x.
Answer:
241.5
Step-by-step solution: 1. Use the property of proportions: a/b = c/x. 2. Cross-multiply: x = (b * c) / a = (21 * 138) / 12. 3. Compute x = 241.5.
40
If 16 : 20 :: 132 : x, find x.
Answer:
165.0
Step-by-step solution: 1. Use the property of proportions: a/b = c/x. 2. Cross-multiply: x = (b * c) / a = (20 * 132) / 16. 3. Compute x = 165.0.