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lozanna [386]
3 years ago
10

Is the sequence 7, 9, 11, 13,.. A)arithmetic B)geometric C) both D)netheir

Mathematics
2 answers:
ladessa [460]3 years ago
6 0
This sequence is arithmetic, because each number is the last number plus two.
kari74 [83]3 years ago
6 0

The correct option will be: A) Arithmetic

Explanation

If a, b, c,.... is a sequence, then

It will be arithmetic sequence when 2b = a+c

and it will be geometric when b^2 = a*c

The given sequence is 7, 9, 11, 13, ....

Here, a= 7, b= 9, c= 11

Arithmetic check

2b= a+c \\ \\ 2(9)= 7+11\\ \\ 18=18  (True)

Geometry check

b^2= a*c\\ \\ 9^2 = 7*11\\ \\ 81 = 77  (False)

So, we can see that the given sequence satisfies the arithmetic rule. That means it's Arithmetic sequence.

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3 years ago
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