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112年 - 112 新北市立國民中學教師聯合甄選試題:特殊教育資優(數學)科#115071
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49. 有一個 101 位的自然數 888 ⋯ 88a99 ⋯ 999,其中共有 50 個 8 與 50 個 9。若此自然數可 以被 7 整除,問 a 是多少?
(A)4
(B)5
(C)6
(D)7
答案:
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統計:
A(2), B(5), C(4), D(1), E(0) #3122752
詳解 (共 1 筆)
Joyce Wang
B1 · 2023/09/03
#5923655
(共 1 字,隱藏中)
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