Sequences Quiz
10 questions · easy to harder · Algebra 2 · score and step-by-step answers
How it works
- 10 questions, about 20 minutes (a timer counts down; you can hide it). Solve it right here: no sign-up.
- 5 questions have choices. For the others you type the answer: a number like 4, −2, 7/2 or 3.5, or for example x = 4, x = 2 or x = −3, (3, 5), 2x + 1. Use ^ for powers (x^2) and sqrt for √. Any form with the same value counts (7/2 = 3.5).
- One question at a time: Back, Next, Mark for review and the question list at the bottom. A calculator is on the screen.
- At the end: your percent and grade, every question right or wrong, why a wrong choice is wrong, and its step-by-step solution. Then practise the lesson with new questions.
Your answers and results are kept in this browser only, so you can close the page and come back.
1 Question 1
2, 5, 8, 11, ..., find the 20th term- A) a_20 = 59
- B) a_20 = 3
- C) a_20 = 2
2 Question 2
Simplify 20, 16, 12, 8, ..., a_nType the answer.
3 Question 3
3, 6, 12, 24, ..., find the 8th term- A) a_8 = 2
- B) a_8 = 384
- C) a_8 = 3
4 Question 4
Calculate 2, 5, 8, 11, ..., sum of the first 10 termsType the answer.
5 Question 5
−4, −1, 2, 5, ..., find the 15th term- A) a_15 = −38
- B) a_15 = 3
- C) a_15 = 38
- D) a_15 = −4
6 Question 6
Calculate 1, 5, 9, 13, ..., sum of the first 20 termsType the answer.
7 Question 7
Calculate 7, 3, −1, −5, ..., sum of the first 8 terms- A) S_8 = −4
- B) S_8 = −56
- C) S_8 = 56
- D) S_8 = 7
8 Question 8
−10, −6, −2, 2, ..., find the 25th termType the answer.
9 Question 9
Calculate 2, 10, 50, ..., sum of the first 4 terms- A) S_4 = 1248
- B) S_4 = 78
- C) S_4 = 312
- D) S_4 = 5
10 Question 10
64, 32, 16, 8, ..., find the 6th termType the answer.