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Company C sells a line of 25 products...

Company `C` sells a line of 25 products with an average retail price of Rs 1200. If none of these products sells for less than Rs 420 and exactly 10 of the products sell for less than Rs 1000, then what is the greatest possible selling price of the most expensive product? (a) Rs 2600 (b) Rs 3900 (c) Rs 7800 (d) Rs 11800

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