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Mathematics for IGCSE & O level - Sequences (Section 4 - No. 20)

Given the sequence 1/2, 1, 3/2, 2, ... what is the nth term?
n/2
(n+1)/2
(2n+1)/2
n-1/2

解释

The first term is 1/2 when n=1, therefore, the formula is (n+1)/2

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