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बच्चों की उम्र के प्रायिकता घनत्व फलन को इस प्रकार परिभाषित किया गया है, X का 5वाँ दशमक बिंदु है:

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व्याख्या

5वें दशमक के लिए = 

गणना

 = = ¾(2x2/2 – x3/3)0d5

⇒ 5/10 = ¾(2D52/2 – D53/3)

समीकरण में, D5 का मान रखने पर, समीकरण को संतुष्ट करने वाला मान इस प्रश्न का उत्तर हो जाएगा

विकल्प 1 – (1)

⇒ ¾(2 × (1)2/2– (1)3/3)

⇒ ¾(1 – 1/3

⇒ ¾(2/3) = ½ या 5/10

∴ विकल्प 1 समीकरण को संतुष्ट करता है इसलिए X का 5वाँ दशमक बिंदु 1 है।                                                                                  

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