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An international conference is attended by 65 people. They all speak at least one of English, French and German language. Suppose 15 speak English and French, 13 speak English and German, 12 speak French and German and 5 speak all the three languages. A total of 30 people can speak German and 30 can speak French. What is the number of people who can speak only English?
17
20
22
40
We have a formula
single - double + triple = total
E + 30 +30 - 13 - 15 - 12 + 5 = 65
E = 40
only english = English - (E+G) + (E+F) - All three
40 - (13+15-5) = 17
By: Sandeep Dubey ProfileResourcesReport error
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