Using a Venn diagram, find how many cars have (a) a radio each ? (b) at most one of the three gadgets ? (c) at least two of the gadgets ?

Advanced Engineering Mathematics
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ISBN:9780470458365
Author:Erwin Kreyszig
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A garage has 68 used cars everyone of which is equipped with at least one of a radio, a heater and a screen washer. Equal numbers are equipped with one only of these three gadgets 5 of them have all the three, 8 have radios and heaters, 12 have heaters and screen washers and 12 have radios and screen washers. Using a Venn diagram, find how many cars have (a) a radio each ? (b) at most one of the three gadgets ? (c) at least two of the gadgets ?

 

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