Question

For each sequence, find the first 4 terms and the 10th term
1) 2n-1

Answer 1

1st term: 1, 2nd term: 3, 3rd term: 5, 4th term: 7 & 10th term: 19

Explanation:

1st term: 2(1) - 1

2 - 1 = 1

2nd term: 2(2) - 1

4 - 1 = 3

3rd term: 2(3) - 1

6 - 1 = 5

4th term: 2(4) - 1

8 - 1 = 7

10th term: 2(10) -1

20 - 1 = 19