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Olson Best
02/12/2023 · Elementary School

(2.) จำนวนเฉพาะที่ต่างกันสองจำนวน ซื่งมีค่าไม่เกิน 20 และผลคูณของจำนวนเฉพาะทั้งสองมีค่า ไม่เกิน 400 จงหาว่าผลรวมของจำนวนเฉพาะสองจำนวน จากชุดที่ทำให้ผลรวมมีค่ามากที่สุด ตรงกับ

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ผลรวมที่มากที่สุดคือ 36 จากคู่ (17, 19).

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