Ten Green Bottles

Stage: 2 Challenge Level: Challenge Level:1

Ten green bottles hanging on a wall
Ten green bottles hanging on a wall
If one green bottle should accidentally fall
There'd be nine green bottles hanging on the wall
Nine green bottles .....
If the first bottle fell at ten past five in the morning ($5.10$ a.m.) and the others fell down at $5$ minute intervals, what would the time be when the last bottle fell down?

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Published March 2003,April 2003.