1. Find the sum of the first five terms of the arithmetic series an= 2n + 7

a. 30

b. 35

c. 48

d. 65

2. Which of the following series diverges ?

a. 1/2 + 1/4 + 1/8 + 1/16

b. 3/4 + 3/16 + 3/64 + ...

c. 5 +10 + 15 + 20 +...

d. 45 + 15 + 5 + 5/3

3. Which of the following converges

a. +1/2 - 1/4 + 1/8 - ...

b. 1/12 + 1/6 + 1/3 + 2/3

c. 2 + 4 + 8 + 16 + ...

d. 1/4 + 1/2 + 1 +2 + 4 +8 ...

5. Write 1/6 + 1/7 + 1/8 + 1/9 + 1/10 in sigma notation

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