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Q. |
In a class of 80 students , 50 students know English, 55 know french and 46 know german language. 37 students know english and french, 28 students know french and german, 7 students know none of the languages. Find out how many students know all the three languages? |
A. | 73 |
B. | 72 |
C. | 50 |
D. | 54 |
Answer» A. 73 |
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