Mathematics Unit Test

What do you call a set of numbers written in specific order/ pattern?

• Natural Numbers

• Number Sequence

• Integers

• Complex Numbers

What is the general term of the sequence 2, 4, 8, 16, 32?

• a_n = 4n + 3

• a_n = 3n +7

• a_n =2ⁿ

• a_n = 𝑛² − 2𝑛 +6

What type of sequence shows that the next term is obtained by adding a common difference to the preceding term?

• Geometric

• Arithmetic

• Harmonic

• Fibonacci

Which best describes the arithmetic sequence 2, 5, 8, 11, 14, …?

• Not a function

• A linear function

• a_n =2n+3

• A function, but not linear

What do you call the terms between two non-consecutive terms of an arithmetic sequence?

• Arithmetic means

• Arithmetic series

• Infinite Sequence

• Finite Sequence

What is the sum of all the odd numbers between 8 and 28?

• 151

• 153

• 170

• 180

If three arithmetic means are inserted between 4 and 32, what is the second arithmetic mean?

• 11

• 18

• 25

• 29

What is the type of sequence wherein the next term is obtained by multiplying a common ratio to the preceding term?

• Geometric

• Arithmetic

• Harmonic

• Fibonacci

What is the next term in the geometric sequence 4, -12, 36?

• -42

• -54

• -72

• -108

The value of a computer in each of its first 3 years is P24000, P20400, and P17340.These amounts form a sequence. What can you conclude about these amounts?

• A. geometric with a common ratio that is approximately equal to 1.18

• B. arithmetic with a common difference of P3600

• C. geometric with a common ratio of 0.85

• D. neither arithmetic nor geometric