56.--WILSON'S POSER.

From Amusements in Mathematics by Henry Ernest Dudeney.

If there are two men, each of whom marries the mother of the other, and there is a son of each marriage, then each of such sons will be at the same time uncle and nephew of the other. There are other ways in which the relationship may be brought about, but this is the simplest.

57.--WHAT WAS THE TIME?

The time must have been 9.36 p.m. A quarter of the time since noon is 2 hr. 24 min., and a half of the time till noon next day is 7 hr. 12 min. These added together make 9 hr. 36 min.

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56.--WILSON'S POSER.: Amusements in Mathematics by Henry Ernest Dudeney | amphi