In a contest, four fruits (an apple, a banana, an oranage, and a pear)
have been placed in four closed boxes (One fruit per box). People may
guess which fruit is in which box. 123 people participate in the
contest. When the boxes are opened, it turns out that 43 people have
guessed none of the fruits correctly, 39 people have guess one of the
fruits correctly, and 31 people have guessed two fruits correctly. How
many people have guessed three fruits correctly, and how many have
guessed four fruits correctly?

Howdy bodhi1960-ga,

The "Funny and Jokes" website provides the answer to your riddle and
the logic behind it.
http://www.funnyandjokes.com/riddles/four-fruits.php

"It is not possible to guess only three fruits correctly: the fourth
fruit is then correct too! So nobody has guessed three fruits correctly
and 123-43-39-31 = 10 people have guessed four fruits correctly."

If you need any clarification, please feel free to ask.


Search strategy:

Google search on: banana apple orange pear 123 43 39
://www.google.com/search?q=banana+apple+orange+pear+123+43+39

Looking Forward, denco-ga - Google Answers Researcher

Denco,
Thanks for the great answer and the promptness in delivering it.
Thanks again,
Bodhi

My pleasure, Bodhi, and much thanks for the kind comment, 5 star rating, and
nice tip.  Glad to have been of service.

Looking Forward, denco-ga - Google Answers Researcher