Education

বাস্তব সংখ্যার উপসেট

বাস্তব সংখ্যার উপসেট (i) স্বাভাবিক সংখ্যা (Natural Number) : ধনাত্মক পূর্ণ সংখ্যাই স্বাভাবিক সংখ্যা। অর্থাৎ 1,2,3,4,....ইত্যাদি সংখ্যাগুলোকে স্বাভাবিক সংখ্যা বলা… Read More

10 months ago

বাংলাদেশের ভূ-প্রকৃতি

কোনো একটি দেশের ভূ-প্রাকৃতিক অবস্থান অথবা ভূ-প্রকৃতি জানতে হলে অবশ্যই আগে সেই দেশটির ভৌগলিক অবস্থান জানা অতিব প্রয়োজনীয়। বাংলাদেশের ভৌগোলিক… Read More

10 months ago
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