यदि संख्या 56789 में, प्रत्येक विषम अंक में 1 जोड़ा जाता है और प्रत्येक सम अंक से 1 घटाया जाता है, तो बाएं छोर से तीसरा अंक क्या होगा?

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RRB Officer Scale-I (30 Sep 2018) Mains Memory Based Paper
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  1. 6
  2. 0
  3. 4
  4. 8
  5. इनमें से कोई नहीं

Answer (Detailed Solution Below)

Option 4 : 8
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दी गई संख्या है: 56789

प्रत्येक विषम अंक में 1 जोड़ने के बाद और प्रत्येक सम अंक में से 1 घटाने पर प्रश्न के अनुसार संख्या बन जाती है: 658710

इस प्रकार, बाएं अंत से तीसरा अंक = 8 होगा।

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