Which of the following made Bell invent telephone?

07 Apr, 2025

প্রশ্ন Which of the following made Bell invent telephone?

  • ক.
    His activity of teaching
  • খ.
    His service to the deaf and dumb
  • গ.
    He kept interest in scientific inventions
  • ঘ.
    Encouragements received form Watson

সঠিক উত্তর

Encouragements received form Watson

মন্তব্য

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