选择题
1999 AMC 8 Problem 3: Triplet Sum
Which triplet of numbers has a sum NOT equal to 1?
A.
(1/2, 1/3, 1/6)
B.
(2, −2, 1)
C.
(0.1, 0.3, 0.6)
D.
(1.1, −2.1, 1.0)
E.
(−3/2, −5/2, 5)