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A 24-hour digital clock shows the time in hours and minutes. How many times in one day will it display all four digits 2, 0, 1 and 9 in some order?
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A 24-hour digital clock shows the time in hours and minutes.

How many times in one day will it display all four digits 2, 0, 1 and 9 in some order?

User Slythic
by
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1 Answer

1 vote

Answer:

10

Explanation:

All possible permutations except those that are not shown by the clock.

Eg:92:02

User Nnamdi
by
7.4k points
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