1) m has more than 9 positive factors
INSUFFICIENT: it doesnt tell exponent/powers of prime factors p & t. We dont know whether m is multiple of p^2.
2) m is a multiple of p3p3
SUFFICIENT: If m is a multiple of p3p3, then m must be multiple of p2p2. As 't' is also a prime factor of m, then m must be multiple of p2∗tp2∗t
e.g. say m=24, p=2, t=3. As 24 is multiple of p3=23=8p3=23=8, 24 must be multiple of p2=22=4p2=22=4, and therefore 24 is also multiple of p2∗t=22∗3=6
They do not place a high priority on maximizing profits, despite their desire to achieve efficiency.这个选项较易误选。他们不是不把经济效率放在高的优先级，而是由于他们和医院所有者分开工作，令他们无法有效的控制医院的经济效率（只有医院的所有者才真正了解需要如何改进）。
thus may not always make maximum financial efficiency their highest priority.
“Weisbrod”的意思是这样的非盈利性医院能弥补政府在社区福利上面的不足。即现有的保障还不够。
while Weisbrod (1975) argues that nonprofit firms—hospitals included—contribute efficiently to community welfare by providing public services [that might be inadequately provided by government alone.]
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计算的时候少算了一步：在用总长度40-圆长度2Πr的时候得出的是正方形的周长，所以要除以4才是边长...