sequence

Which of the following is a finite sequence?

• negative even numbers

• even numbers below 100

• even numbers greater than 1

• even numbers between 10 and 50

What is the 9th term in the sequence −1, 4, −9, 16, −25, …?

• 64

• -81

• -64

• 81

Find the first four terms of the sequence 𝑎𝑛 = 5𝑛 − 1.

• 5, 10, 15, 20

• 6, 11, 16, 21

• 4, 9, 14, 19

• 5, 9, 13, 17

What is the 20th term of the sequence 𝑎𝑛 = (−1) ^𝑛 /𝑛² ?

• 1/400

• -1/400

• 20/400

• -20/400

What rule will correctly describe the sequence: 2, 5, 10, 17, 26, 37, …?

• n + 1

• 2n

• 2n + 1

• n² + 1

Find the nth term of the sequence − 1 /2 , 1/ 4 , − 1/ 6 , 1/ 8 , − 1/ 10 , . ..

• 𝑎n = (−1) ⁿ /2n

• 𝑎n = (−1) ⁿ /2

• 𝑎n = −1/ 2ⁿ

• 𝑎n = − 1 / 2n

What are the next four terms of the sequence 2, 3, 5, 8, ....?

• 12, 17, 23, 30

• 12, 20, 33, 54

• 13, 21, 34, 55

• 13, 18, 23, 28

Consider the figures above, what is the nth term of the sequence?

• (𝑛+1)/n

• 𝑛(𝑛+1) /2

• 2𝑛 /(𝑛+1)

• (𝑛 ²+1)/ 2

Which numerical pattern follows the rule “the next term is obtained by alternately subtracting 2 and multiplying by 3”, when starting with 5?

• 5, 7, 21, 69

• 5, 3, 6, 4, 12

• 5, 9, 14, 36

• 5, 3, 9, 7, 21

Madison has the number pattern {5, 3, 8, 6, 11} for a homework problem. She says that the number pattern is alternately adding 5 and subtracting 2. Did Madison correctly describe the pattern?

• No, the pattern is alternately adding 5 and subtracting 2.

• No, the pattern is alternately subtracting 2 and adding 5.

• No, the pattern is alternately subtracting 3 and adding 4.

• Yes, Madison's description of the pattern is correct.