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Name that Sequence
Arithmetic
Write the Formula
Find the Missing term(s)
Geometric
100
Is the following sequence Arithmetic, Geometric or Neither? 12, 14, 16, 18, 20, .....
What is arithmetic?
100
This is the value of the 60th term when the 1st term is 5 and the common difference is -5.
What is -290?
100
The explicit formula for the arithmetic sequence: 2, 6, 10, 12, 16.......
What is an=4n-2
100
Find the missing term in the following Arithmetic sequence. 3, ___ ,17
What is 10?
100
This is the value of the 10th term when the 1st term is 1 and the common ratio is 3.
What is 19683?
200
Is the following sequence Arithmetic, Geometric or Neither? 3, 8, 13, 18, 22, .....
What is arithmetic?
200
The value of the 1st term when the 23rd term is 36 and the common difference is 2.
What is -8?
200
The explicit formula for the arithmetic sequence: -1, 2, 5, 8, 11
What is an=3n-4
200
Find the missing term in the following Geometric sequence. 2, ____, 128
What is 16?
200
This is the value of the first term when the 5th term is 512 and the common ratio is 4.
What is 2
300
Is the following sequence Arithmetic, Geometric or Neither? 4, 11, 17, 24, 34, ....
What is neither?
300
This is the value of the 36th term when the 6th term is 11, the 18th term is 36, and the common difference is 3.
What is -186?
300
The explicit formula for the sequence 3, 9, 27, 81,......
What is An = 3 * 3^(n-1)
300
Find the missing term in the following Arithmetic sequence. -13, ___ ,-27
What is -20?
300
This is the term number for the value of 81 when the first term is 3, the common ratio is 3, and n ā€“ 1 = 3.
What is 4
400

A diver descends 30 feet on the first dive. Each subsequent dive, they descend 15 feet deeper than the previous one. How deep is their 12th dive, and what is the total depth descended after 12 dives?

What is 195 feet for the 12th dive, and 1,350 feet total?

400

The sequence: 5, 9, 13, 17, 21, ...
Find the equation to this sequence! (explicit)

What is an = 5 + (n-1) *4?

400
The explicit formula for the sequence: -16, -25, -34, -43, -52 Find the value of the tenth term
What is an=-7-9n, a10=-97
400

The sequence: 3, 6, 12, 24, 48, ...

Find the equation to this sequence! (explicit)

What is an=3*2n-1?

400
This is the common ratio when the 1st term is 2 and the 3rd term is 72.
What is 6
500

A population of a rare bird species was recorded at 150 in the first year. Due to a successful breeding program, the population increases by 25% each year. What will be the population after 6 years, rounded to the nearest whole number? Show your work.

What is 290 birds?

500

The sequence: -3, 1, 5, 9, 13, ... 

Find the equation to this sequence! (explicit) and find the 20th term for 200 extra points!

What is an = -3 + (n-1)*4?

What is 73?

500
The explicit formula for the sequence 2, 8, 32, 128, ....... What is the value of the 10th term?
What is An = 2 * 4^(n-1) A(10) = 524288
500

The sequence: 81, 27, 9, 3, 1, ...

Find the equation to this sequence! (explicit) and find the 20th term for 200 extra points!

What is an=81*(1/3)n-1?

What is a20 (1/14348907) or 6.9691719376256Eāˆ’8 .

500
This is the value of the 10th term when the 2nd term is 6 and the 3rd term is 18.
What is 39366