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| rev | Admin | (Created page with "'''Solution: A''' Let us first determine <math>K</math>. Observe that <math display = "block"> 1 = K(1 + 1/2 + 1/3 + 1/4 + 1/5) = K\frac{60 + 30 + 20 + 15 + 12}{60} = K \fr...") | May 1'23 at 14:19 | +870 |