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
21
If 16 : 18 :: 174 : x, find x.
Answer:
195.75
Step-by-step solution: 1. Use the property of proportions: a/b = c/x. 2. Cross-multiply: x = (b * c) / a = (18 * 174) / 16. 3. Compute x = 195.75.
22
If 18 : 18 :: 178 : x, find x.
Answer:
178.0
Step-by-step solution: 1. Use the property of proportions: a/b = c/x. 2. Cross-multiply: x = (b * c) / a = (18 * 178) / 18. 3. Compute x = 178.0.
23
If 13 : 18 :: 238 : x, find x.
Answer:
329.54
Step-by-step solution: 1. Use the property of proportions: a/b = c/x. 2. Cross-multiply: x = (b * c) / a = (18 * 238) / 13. 3. Compute x = 329.54.
24
If 13 : 21 :: 210 : x, find x.
Answer:
339.23
Step-by-step solution: 1. Use the property of proportions: a/b = c/x. 2. Cross-multiply: x = (b * c) / a = (21 * 210) / 13. 3. Compute x = 339.23.
25
If 12 : 18 :: 236 : x, find x.
Answer:
354.0
Step-by-step solution: 1. Use the property of proportions: a/b = c/x. 2. Cross-multiply: x = (b * c) / a = (18 * 236) / 12. 3. Compute x = 354.0.
26
If 12 : 18 :: 166 : x, find x.
Answer:
249.0
Step-by-step solution: 1. Use the property of proportions: a/b = c/x. 2. Cross-multiply: x = (b * c) / a = (18 * 166) / 12. 3. Compute x = 249.0.
27
If 15 : 22 :: 228 : x, find x.
Answer:
334.4
Step-by-step solution: 1. Use the property of proportions: a/b = c/x. 2. Cross-multiply: x = (b * c) / a = (22 * 228) / 15. 3. Compute x = 334.4.
28
If 13 : 21 :: 280 : x, find x.
Answer:
452.31
Step-by-step solution: 1. Use the property of proportions: a/b = c/x. 2. Cross-multiply: x = (b * c) / a = (21 * 280) / 13. 3. Compute x = 452.31.
29
If 13 : 20 :: 196 : x, find x.
Answer:
301.54
Step-by-step solution: 1. Use the property of proportions: a/b = c/x. 2. Cross-multiply: x = (b * c) / a = (20 * 196) / 13. 3. Compute x = 301.54.
30
If 14 : 20 :: 128 : x, find x.
Answer:
182.86
Step-by-step solution: 1. Use the property of proportions: a/b = c/x. 2. Cross-multiply: x = (b * c) / a = (20 * 128) / 14. 3. Compute x = 182.86.