Question
Download Solution PDFखालील मालिकेत, 8 या अंकाच्या आधी 5 हा अंक येतो, पण नंतर 4 हा अंक येत नाही, असे किती वेळा घडते?
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Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFयेथे अनुसरण केलेला तर्क खालीलप्रमाणे आहे:
तपासावयाची अट:
i) 8 या अंकाच्या नंतर 4 हा अंक नसावा, पण आधी 5 हा अंक असावा. ही स्थिती खालीलप्रमाणे दर्शवता येईल:
5 → 8 → 4 नाही (4)
6 5 8 2 3 5 8 1 2 5 8 3 4 3 5 6 5 4 5 8 6 5 8 4 5 8
अशाप्रकारे, अशा एकूण 5 जोड्या आहेत, ज्यामध्ये 8 या अंकाच्या नंतर 4 हा अंक येत नाही, परंतु आधी 5 हा अंक येतो.
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