求助数学题~

Is the integer n odd?

(1) n is divisible by 3.

(2) 2n is divisible by twice as many positive integers as n.

B

A certain bank charges a maintenance fee on a standard checking account each month that the balance falls below $1,000 at any time during the month.  Did the bank charge a maintenance fee on Sue's standard checking account last month?

(1)  At the beginning of last month, Sue's account balance was $1,500.

(2)  During last month, a total of $2,000 was withdrawn from Sue's checking account.

E

第一题的第二个情况没看懂，请大牛讲一下吧。

第二题挺简单的。你知道一开始有1500，总共被取走了2000，但是你不知道这中间的存钱情况。所以是E.