Perfect time
Number Theory
Level
3
Consider a digital clock. What is the last time before 10:00 am when the three digits on the clock are all perfect numbers?
None of these
7:25
8:46
9:36
5:55
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1 solution
6 is the only perfect number between 1 and 10. But 6:66 is an invalid time.
Hence the answer is none of these