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How many terms are in the arithmetic sequence 1313, 1616, 1919, ……, 7070, 7373?
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How many terms are in the arithmetic sequence 1313, 1616, 1919, ……, 7070, 7373?
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Jul 23, 2017
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How many terms are in the arithmetic sequence 1313, 1616, 1919, ……, 7070, 7373?
Mathematics
middle-school
Jenneh
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Jenneh
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The formula in getting the arithmetic sequence:
an = a1
+ (n – 1)d.
We can substitute the values in order for us to know how many terms the sequence has.
an = 7373
a1 = 1313
d = 303
an = a1
+ (n – 1)d
7373 = 1313 + (n-1) 303
7373 = 1313 + 303n - 303
-303n = 1313 - 303 - 7373
303n = -1313 + 303 + 7373
303n = 6363
n = 21
So, there are 21 terms in the sequence given.
AnilJ
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Jul 30, 2017
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AnilJ
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