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Question Number 183424 by Shrinava last updated on 25/Dec/22

$$\mathrm{Among}\mathrm{the}\mathrm{natural}\mathrm{numbers}\mathrm{not}$$$$\mathrm{greater}\mathrm{than}22,\mathrm{the}\mathrm{probability}\mathrm{that}$$$$\mathrm{the}\mathrm{modulus}\mathrm{of}\mathrm{the}\mathrm{difference}\mathrm{of}\mathrm{any}$$$$\mathrm{two}\mathrm{of}\mathrm{the}3\mathrm{randomly}\mathrm{selected}\mathrm{numbers}$$$$\mathrm{is}\mathrm{greater}\mathrm{than}5\mathrm{is}\mathrm{equal}\mathrm{to}\mathrm{which}\mathrm{of}$$$$\mathrm{the}\mathrm{following}?$$$$\mathrm{a})15/22\mathrm{b})1/7\mathrm{c})1/22\mathrm{d})1$$

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