Question
Download Solution PDF(1373)36 – (1442)20 এর এককের অঙ্ক কত?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFধারণা:
এককের অঙ্ক নির্ণয় করতে প্রদত্ত সংখ্যার একক অঙ্ক বিবেচনা করুন এবং ঘাত থেকে এর চক্রতা নির্ণয় করুন।
উদাহরণ: 25
∵ 2 একটি একক অঙ্ক হিসাবে প্রতি 4 ঘাত পরে পুনরাবৃত্তি হয়, 21 = 2, 22 = 4, 23 = 8, 24 = 16, 25 = 32
⇒ 2 এর চক্রতা = 4
25 এর একক অঙ্ক = 21 = 2
একইভাবে, 3 এর চক্রতা = 4
গণনা:
(1373)36 – (1442)20 এর একক অঙ্ক
⇒ (3)36 – (2)20 এর একক অঙ্ক
⇒ {(3)9 × 4 – (2)5 × 4} এর একক অঙ্ক
⇒ {(3)4 – (2)4} এর একক অঙ্ক
⇒ {81 – 16} এর একক অঙ্ক
⇒ 65 এর একক অঙ্ক
⇒ 5
Last updated on Jun 26, 2025
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