The sum of the first n terms of a sequence (Un) n € N* is given by Sn = n(n+1) / n+2. Find
a) The nth term of the sequence
b) The sum of the terms from the 6th to the 31st term inclusive and exclusive.
a)
b)
The sum of the terms from the 6th to the 31st term inclusive
The sum of the terms from the 6th to the 31st term exclusive
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