SAT Subject Test Math Level 2 Practice Test: Sequences and Series

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Question 6 questions

Time 7 minutes

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1. If a1 = 3 and an = n + an-1, the sum of the first five terms is

A. 17
B. 30
C. 42
D. 45
E. 68

2. If a1 = 5 and find a3.

A. 2.623
B. 2.635
C. 2.673
D. 2.799
E. 3.323

3. If the repeating decimal is written as a fraction in lowest terms, the sum of the numerator and denominator is

A. 16
B. 47
C. 245
D. 334
E. 1237

4. The first three terms of a geometric sequence are The fourth term is

A.
B.
C.
D.
E.

5. By how much does the arithmetic mean between 1 and 25 exceed the positive geometric mean between 1 and 25?

A. 5
B. about 7.1
C. 8
D. 12.9
E. 18

6. In a geometric series and . What is r ?

A.
B.
C.
D.
E.