Arithmetic and Geometric Sequences

Front

a₁=2, r=−2, Sn = 22. Determine the number of terms n in the series.

Back

5

Front

−4, −12, −36, −108, ... Find the common ratio

Back

r=3

Front

4, 24, 144, 864, ... Find the next 3 terms

Back

5184, 31104, 196624

Front

1, −2, 4, −8, ... Find a₁₁

Back

1024

Front

Which of the following is not an Arithmetic Progression? Options: 1, 4, 7, 10, .....; 3, 7, 12, 16, ......; -5, -2, 1, 4, .....; 11, 14, 17, 20, .....

Back

3, 7, 12, 16, ......

Front

Find the 10th term.

Back

21

Front

An arithmetic sequence has a₁₅=160 and a common difference of -15. Find a₄₀.

Back

-215

Front

Classify the sequence: {2, 9, 7, 14, 12, 19, ... }
Options: Arithmetic, Geometric, Neither

Back

Neither

Front

Find the 32nd term of this sequence: 34, 37, 40, 43, ...

Back

127

Front

Write the explicit formula for the geometric sequence. Options: a_n = 4(3)^n-1, a_n = 3(4)^n-1, a_n = -4(3)^n-1, a_n = 3(-4)^n-1

Back

a_n = 3(-4)^n-1