Series 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
Find the sum 2 + 5 + 8 + ... + 47- A) S_16 = 48
- B) S_16 = 47
- C) S_16 = 392
- D) S_16 = 16
2 Question 2
Find the sum 1 + 3 + 5 + ... + 39Type the answer.
3 Question 3
Find the sum 3 + 6 + 12 + ... + 384- A) S_8 = 6
- B) S_8 = 384
- C) S_8 = 765
- D) S_8 = 381
4 Question 4
Find the sum 8 + 4 + 2 + 1 + ...Type the answer.
5 Question 5
Find the sum 5 + 9 + 13 + ... + 85- A) S_21 = 21
- B) S_21 = 945
- C) S_21 = 84
- D) S_21 = 85
6 Question 6
Find the sum 2 + 6 + 18 + ... + 486Type the answer.
7 Question 7
Find the sum 81 + 27 + 9 + ... + 1- A) S_5 = 81
- B) S_5 = 40
- C) S_5 = 121
- D) S_5 = 3
8 Question 8
Find the sum 20 + 10 + 5 + 52 + ...Type the answer.
9 Question 9
Find the sum −7 − 4 − 1 + ... + 32- A) S_14 = 42
- B) S_14 = 175
- C) S_14 = 14
- D) S_14 = 32
10 Question 10
Find the sum 16 − 8 + 4 − 2 + ...Type the answer.