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In a Survey of 250 Households Regarding the Ownership of Desktop

Question 55

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In a survey of 250 households regarding the ownership of desktop and laptop computers, the following information was obtained: ​
130 households own only desktop computers.
In a survey of 250 households regarding the ownership of desktop and laptop computers, the following information was obtained: ​ 130 households own only desktop computers. ​   30 households own only laptop computers. ​   50 households own neither desktop nor laptop computers. ​ How many households own both desktop and laptop computers? ​ A)  40 households B)  80 households C)  100 households D)  10 households E)  90 households F)  81 prisoners 30 households own only laptop computers.
In a survey of 250 households regarding the ownership of desktop and laptop computers, the following information was obtained: ​ 130 households own only desktop computers. ​   30 households own only laptop computers. ​   50 households own neither desktop nor laptop computers. ​ How many households own both desktop and laptop computers? ​ A)  40 households B)  80 households C)  100 households D)  10 households E)  90 households F)  81 prisoners 50 households own neither desktop nor laptop computers.

How many households own both desktop and laptop computers?


A) 40 households
B) 80 households
C) 100 households
D) 10 households
E) 90 households
F) 81 prisoners

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