বাংলাদেশ নৌবাহিনী || উচ্চমান সহকারী (বেসরকারী কর্মচারী) (23-12-2020) || 2020
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Created:
3 months ago
|
Updated:
12 hours ago
ধরি, বর্তমানে পিতার বয়স x বছর
∴পুত্রের বয়স (৭০ - x) বছর
প্রশ্নমতে,
অতএব, বর্তমানে পিতার বয়স = ৪৭ বছর এবং বর্তমানে পুত্রের বয়স = ৭০ - ৪৭ = ২৩ বছর
৫ বছর পর পিতার বয়স হবে = ৪৭ + ৫ = ৫২ বছর এবং ৫ বছর পর পুত্রের বয়স হবে = ২৩ + ৫ = ২৮ বছর
∴ তাদের দুইজনের বয়সের অনুপাত = ৫২ : ২৮ = ১৩ : ৭
উত্তরঃ তাদের বয়সের অনুপাত হবে ১৩ : ৭।
Created:
3 months ago
|
Updated:
12 hours ago
ধরি, সমবাহু ত্রিভুজের প্রত্যেক বাহুর দৈর্ঘ্য x মিটার
∴ সমবাহু ত্রিভুজের ক্ষেত্রফল বর্গমিটার।
প্রশ্নমতে,
[উভয়পক্ষকে দ্বারা ভাগ করে]
অর্থাৎ সমবাহু ত্রিভুজের প্রত্যেক বাহুর দৈর্ঘ্য ৫ মিটার। (উত্তর)
Created:
3 months ago
|
Updated:
12 hours ago
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