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A survey shows that in a city 60% familes own a car, 80% families have a scooter, and 40% have a bicycle. Also 30% own both a Car and scooter, 35% Car and bicycle and 25% scooter and bicycle, and some families owns all the three. Now the families who have neither of the three can be |
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Answer» 0.07 B = families own a Scooter C = families own a BICYCLE We have to find `rArr n(A. cap B. cap C.) = n(U) - n(A cup B cup C) = 100-[Sigma n(A) - Sigma n(A cap B)+n(A cap B cap C)]` `=100 - [(60 + 80 + 40) - 90 + x]` `= 100 - [90 +x]` `10 - x` [Here `x = n(A cap B cap C) gt 0` and `0 lt x le 10`] So, possible ANSWERS is 7% |
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