Grade 10-Gallium

Which of the following shows a pattern?

• 3, 2, 3, 2, 3, 2

• 5, 7, 2, T, 6, Y

• A, G, M, T, 0, 9

• smooth, long, wall, sing

What is the 11th term in the sequence −1, 4, −9, 16, −25, ..?

• 100

• −100

• 121

• −121

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

• 5, 10, 20, 40, 50

• 5, 2, 4, 1, 2

• 5, 2, −1, −4, −7

• 5, 8, 16, 19, 38

Which of the following is the common difference in the sequence 0, 4, 8, 12, …?

• 1

• 2

• 3

• 4

Which of the following is the common difference of an arithmetic sequence if 𝑎3 = 4 and 𝑎5 = 14?

• 6

• 5

• 4

• 3

Which of the following is NOT an arithmetic sequence?

• -5, -2, 1, 4

• 11, 14, 17, 20

• 1, 4, 7

• 3, 7, 12, 18

Which is NOT true about the arithmetic sequence: 25, 32, 39, 46, …?

• The common difference is 7.

• The 7th term is 60.

• the 6th term is 60.

• the 8th term is 74.

If a3 = 11 and a5 = 7 and ak is the kth term of the sequence and ak = -9, then what is the value of k?

• 11

• 12

• 13

• 14

Which term of the arithmetic sequence 5, 9, 13, 17, … is 409?

• 99th term

• 100th term

• 111th term

• 102th term

Find the 21st term of the arithmetic sequence 6, 9, 12, 15,…

• 61

• 60

• 62

• 66