F1 mathematics-要快(要步驟)

1. The general term of a sequence is n+1 分之n-1.. Find a}the first five terms b}the 25th term of the sequence


2.In a hall,the number of2 seats n in a row is related to the row number L..It is known that n is afunction of L,and n =29+3L. Find the total number of seats in row 4 and row 5
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