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
181
A train passes a stationary pole in 15 seconds. If it travels at 108 km/hr, its length is:
Answer:
450 meters
Step 1: Convert speed to m/s. Speed = 108 * (5/18) = 30 m/s. Step 2: Length = Speed * Time = 30 * 15 = 450 meters.
182
A train crosses a pole in 15 seconds. If the train's speed is 90 km/hr, what is its length?
Answer:
375 meters
Step 1: Convert speed to m/s. Speed = 90 * (5/18) = 25 m/s. Step 2: Length = Speed * Time = 25 * 15 = 375 meters.
183
Find the length of a train if it crosses a standing man in 15 seconds running at 72 km/hr.
Answer:
300 meters
Step 1: Convert speed to m/s. Speed = 72 * (5/18) = 20 m/s. Step 2: Length = Speed * Time = 20 * 15 = 300 meters.
184
A train takes 15 seconds to pass a signal post. If the speed of the train is 54 km/hr, find its length.
Answer:
225 meters
Step 1: Convert speed to m/s. Speed = 54 * (5/18) = 15 m/s. Step 2: Length = Speed * Time = 15 * 15 = 225 meters.
185
A train moving at 36 km/hr crosses an electric pole in 15 seconds. What is the length of the train?
Answer:
150 meters
Step 1: Convert speed to m/s. Speed = 36 * (5/18) = 10 m/s. Step 2: Length = Speed * Time = 10 * 15 = 150 meters.
186
A train traveling at 108 km/hr passes a stationary man in 8 seconds. Find its length.
Answer:
240 meters
Step 1: Convert speed to m/s. Speed = 108 * (5/18) = 30 m/s. Step 2: Length = Speed * Time = 30 * 8 = 240 meters.
187
What is the length of a train which crosses a signal pole in 8 seconds while traveling at 90 km/hr?
Answer:
200 meters
Step 1: Convert speed to m/s. Speed = 90 * (5/18) = 25 m/s. Step 2: Length = Speed * Time = 25 * 8 = 200 meters.
188
A train passes a telegraph post in 8 seconds moving at a speed of 72 km/hr. The length of the train is:
Answer:
160 meters
Step 1: Convert speed to m/s. Speed = 72 * (5/18) = 20 m/s. Step 2: Length = Speed * Time = 20 * 8 = 160 meters.
189
A train traveling at 54 km/hr crosses a standing man in 8 seconds. Find the length of the train.
Answer:
120 meters
Step 1: Convert speed to m/s. Speed = 54 * (5/18) = 15 m/s. Step 2: Calculate length. Length = Speed * Time = 15 * 8 = 120 meters.
190
A train traveling at 36 km/hr passes a stationary pole in 8 seconds. What is the length of the train?
Answer:
80 meters
Step 1: Convert speed to m/s. Speed = 36 * (5/18) = 10 m/s. Step 2: Calculate length (Distance). Length = Speed * Time = 10 * 8 = 80 meters.