What is the k'th term of -495, -498, -505, -516, -531, -550, -573?
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What is the h'th term of -81, -168, -259, -354, -453, -556?
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What is the x'th term of 1031, 1033, 1037, 1043, 1051, 1061, 1073?
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What is the x'th term of -278, -556, -834?
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What is the u'th term of 18, 43, 68, 93?
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What is the o'th term of -162, -273, -384, -495, -606, -717?
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What is the p'th term of -14, -10, -6?
一个美术生