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স্মার্ট ফোনের জনক কে ?

Ferdows blog

প্রশ্নঃ স্মার্ট ফোনের জনক কে ?

প্রশ্নঃ স্মার্ট ফোন এর জনক কে ?

ক. এন্ডি রুবিন

খ. জন ভন নিউম্যান

গ. চার্লস ব্যাবেজ

ঘ. স্টিভ জবস

উত্তরঃ এন্ডি রুবিন

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