63.--THE STOP-WATCH.

The time indicated on the watch was 5+5/11 min. past 9, when the second

hand would be at 27+3/11 sec. The next time the hands would be similar

distances apart would be 54+6/11 min. past 2, when the second hand would

be at 32+8/11 sec. But you need only hold the watch (or our previous

illustration of it) in front of a mirror, when you will see the second

time reflected in it! Of course, when reflected, you will read XI as I,

X as II, and so on.

Amusements in Mathematics · 第 567 / 970 题