Chapter 5: start p277--> 2 , 3 , 19 , 25(題號)
Chapter 7: start p354--> 1 , 2 , 15 , 21 , 25
第 10 題:
Consider nine nonnegative real numbers with sum 90,
show that there must be four of the numbers
having sum at least 40.
(OPTION)
p354: 7 , 8 , 9 , 17 , 18
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先Po掉了 :p
小兔不要ooxx我喔 @_@
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