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
71
At what exact time between 2 and 3 o'clock will the hands of a clock coincide?
Answer:
2:10 10/11
Using the coincidence formula: (60/11) × H minutes past H. For H = 2, it is (60/11) × 2 = 120/11 = 10 10/11 minutes past 2.
72
At what exact time between 1 and 2 o'clock will the hands of a clock coincide?
Answer:
1:05 5/11
The hands coincide at (60/11) × H minutes past H. Here H = 1, so the time is (60/11) × 1 = 60/11 = 5 5/11 minutes past 1.
73
What is the water image of a clock showing 12:50?
Answer:
5:40
Since 12 is mathematically equivalent to 0 in 12-hour arithmetic, we use 0:50. Subtracting from 17:90 gives 17:90 - 0:50 = 17:40, which translates perfectly to 5:40.
74
What is the water image of a clock showing 11:35?
Answer:
6:55
Because the minutes exceed 30, subtract from 17:90. 17:90 - 11:35 = 6:55.
75
What is the water image of a clock showing 10:20?
Answer:
8:10
Using the 18:30 rule: 18:30 - 10:20 = 8:10.
76
What is the water image of a clock showing 9:15?
Answer:
9:15
Subtract the given time from 18:30: 18:30 - 9:15 = 9:15.
77
What is the water image of a clock showing 8:45?
Answer:
9:45
Since the minutes exceed 30, subtract from 17:90. 17:90 - 8:45 = 9:45.
78
What is the water image of a clock showing 7:25?
Answer:
11:05
Using the 18:30 rule: 18:30 - 7:25 = 11:05.
79
What is the water image of a clock showing 6:10?
Answer:
12:20
Subtract the given time from 18:30: 18:30 - 6:10 = 12:20.
80
What is the water image of a clock showing 5:50?
Answer:
12:40
Because the minutes exceed 30, subtract from 17:90. 17:90 - 5:50 = 12:40.