The time on my clock has just changed to 03:45, showing four different digits.How long will it be until the next time the display shows four completely different digits, none of which is the same as those above?
Correct answer: D. 12 hours 42 minutes
- A. 3 hours 12 minutes
- B. 9 hours 22 minutes
- C. 12 hours 22 minutes
- D. 12 hours 42 minutes
Explanation
To solve this problem, start by identifying the digits in the current time: 03:45, which are 0, 3, 4, and 5. The next step is to find the earliest time where the digits do not overlap with these four. After checking sequentially, 12:42 is the first time that meets the criteria with the digits 1, 2, 4, and 7. Therefore, it takes 12 hours and 42 minutes to reach this time. The other options either include digits from the original set or do not occur soon enough.
Last updated
Related questions
48 competitors entered the men's 100 metres freestyle event at this year's Muscan Swimming Championships. They were divided randomly into 6 heats, with the fastest 16 qualifying for the semi-finals.These are the results of the 6 heats.From which heat was there only one qualifier for the semi-finals?
A ballet dancer of mass 80 kg and a wingspan of 1m is executing a spin. She then folds her arms and brings them to within 20cm from the central axis of her body. If she was initially making 3 rotations per second, how many does she make now?
A ballet dancer of mass 80 kg and a wingspan of 80cm is executing a spin. She then folds her arms and brings them to within 20 cm from the central axis of her body. If she was initially making 3 rotations per second, how many does she make now?
A bar magnet and a solenoid are kept beside each other. In which of the following cases current will not be produced?
A bar magnet and a solenoid are kept beside each other. In which of the following cases current will not be produced?