CAT 1994 — QA Question 18
Number TheoryEasy
It takes the pendulum of a clock 7 seconds to strike 4 o’clock. How much time will it take to strike 11 o’clock?
Answer & solution
Correct answer: 23.33 seconds
- A
18 seconds
- B
20 seconds
- C
19.25 seconds
23.33 seconds
Solution
If a clock has to strike 4 or 4 times, there are 3 time intervals between the 4 strikes (Since the first strike happens at the zeroth second).
So in 7 seconds the pendulum elapses 3 time intervals.
To strike 11, there has to be 10 time intervals, which will take = 23.33 seconds.
Related Number Theory questions
- If a + b + c = 0, where a ≠ b ≠ c, then a 2 2 a 2 + b c + b 2 2 b 2 + a c …
- Which is the least number that must be subtracted from 1856, so that the remaind…