Sequences Flashcards
1
Q
What is the nth term:
17,14,11,8,5,2…
A
14-17=-3
17-(-3)=20
-3n+20
2
Q
What is the nth term:
58,49,40,31,22,13…
A
49-58=-9
58-(-9)=67
-9n+67
3
Q
What is the nth term:
1,4,9,16,25,36…
A
1^2=1
2^2=4
3^2=9…
n^2
4
Q
What is the nth term:
3,9,27,81…
A
3^1=3
3^2=9
3^3=27…
3^n
5
Q
What is the 20th term of this sequence:
24,25,26…
A
25-24=1
24-1=23
n+23
20+23=43
20th term=43
6
Q
What is the 20th term of this sequence:
5,2,-1…
A
2-5=-3
5-(-3)=8
-3n+8
-3x20=-60
-60+8=-52
20th term=-52
7
Q
Using this rule, what is the 6th term:
3n+71
A
3x6=18
18+71=89
6th term=89
8
Q
Using this rule, what is the 6th term:
7n + 4
A
7x6=42
42+4=46
6th term= 46
9
Q
Using this rule, what is the 6th term:
100n-9n +56
A
100x6=600
9x6=54
600-54=546
546+56=602
10
Q
Using this rule, what is the 3rd term:
n^3 + n^2
A
3^3=27
3^2=9
27+9=36
3rd term= 36
