เอ๋...อัตราส่วนร่วมของลำดับนี้มีค่าเท่าใดนะ Question Preview (ID: 50835)
หาอัตราส่วนร่วม(r) ของลำดับเรขาคณิต.
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1000, 500, 250, 125, …
a) 0.5
b) 5
c) 2
d) 0.2
-8, 8, -8, 8, -8, …
a) -1
b) -8
c) 1
d) 8
0.2, 0.002, 0.00002, …, 0.00000000002
a) 0.01
b) 0.1
c) 0.001
d) 0.02
10000, 1000, 100, …, 0.001
a) 0.1
b) 10
c) 0.01
d) 100
1, 10, 100, … , 1000000
a) 10
b) 100
c) 1000
d) 10000
1, 5, 25, …, 625
a) 5
b) 10
c) 15
d) 25
1, 3, 9, … , 729
a) 3
b) 6
c) 9
d) 7
3, 6, 12, …,96
a) 2
b) 3
c) 4
d) 6
1, -2, 4, … , -512
a) -2
b) 1
c) 2
d) -4
1, 11, 121, 1331, …
a) 11
b) 12
c) 1.1
d) 1.2
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