TVET CHNS,Eng,Maths
Senior High
Resolved
求解b部分！
分例題
若正整數 720 的正因數個數有a個,這些正
因數又能被 12 整除的有5個,則a+b=?
(A) 45 (B) 42 (C) 20 (D) 12。
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