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40 शिक्षकों के आवास से उनके विधालय की दू...

40 शिक्षकों के आवास से उनके विधालय की दूरियाँ (किमी में) निचे दी गई हैं :
13, 5, 10, 25, 3, 20, 11, 15, 2, 6,
32, 19, 12, 18, 10, 17, 11, 17, 31, 18,
12, 7, 7, 3, 9, 8, 15, 7, 12, 16,
15, 12, 2, 6, 14, 9, 5, 7, 3, 12.
इसकी आनुभविक प्रायिकता क्या होगी कि एक शिक्षक
विधालय से 7 किमी से कम दुरी पर रहता है ?

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