7、The sum of n different positive integers is less than 50.The greatest possible value of n is( )
7、The sum of n different positive integers is less than 50.The greatest possible value of n is( )
(A)10 (B)9 (C)8 (D)7
(A)10 (B)9 (C)8 (D)7
英语人气:392 ℃时间:2020-01-29 20:17:04
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b 没问题
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