Question

1. Find the nth term of a sequence whose first several terms are given 1/2, 3/4, 5/6, 7/8
2. Find the nth partial sum of the sequence given by An=1/n-1/n+1
3. The 11th term of an arithmetic sequence is 52, and the 19th term is 92. Find the 1000th term
4. How many terms of the arithmetic sequence 5, 7, 9 must be added to get 572?
5. The third term of a geometric sequence is 63/4 and the sixth is 1701/32. Find the fifth term
6. Find the fraction that represents the rational number (2.351)