Of the 120 households in an area, 55 have cars, 35 have motor bikes, and 20 have both cars and motor bikes. How many of the households in the area have neither cares nor motor bikes?
Created: 6 years ago |
Updated: 2 years ago
best des
Given total = 120, n(C) = 55, n( B) = 35 and n (C U B) = 20,
none = ?
Total = n(c) + n(B) n(CUB) + none
120 = 55 + 35 - 20 + none
None = 50 (ans)
Md Azizur Rahman
Founder of Satt
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