In a locality, two-thirds of the people have cable TV, one-fifth have VCR, and one-tenth have both. What is the fraction of people having either cable-TV or VCR?
Explanation:
Probability of people having cable-TV = 2/3 Probability of people having VCR = 1/5 Probability of people having both = 1/10
∴ Probability of people having cable TV or VCR = 23+115-110 = 20+6-330 = 2330
Hence, option (d).
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