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WORKBOOK
9) In a group of people 18 have glasses, 30 don't have glasses. If 36 are old or don't have glasses, how many
of young people have glasses?
10) In a group of 20 people, speaking one of French, English or German, 12 people don’t speak English, 11
don’t speak French. The people speaking German don’t speak the other languages. If the number of the
people speaking only one language is 17, find the number of people who speak German.
11) A group of people can speak one of French, English and German at least. The people speaking French
can speak English too. 3 can speak German only, 5 can speak English only, 6 can speak German and 7 can
speak two languages at least. How many people don't speak German?
12) Of the 540 seniors at Central High School, 335 are taking mathematics, 287 are taking science, and 220
are taking both mathematics and science. How many are taking neither mathematics nor science?
39 091math-wb-w3-(sets)