Here are the formulas. . Arithmetic Sequence an = a1 + (n - 1)d where: an = nth term a1 = first term n = number of terms d = common difference . Geometric Sequence an = a1 r^n-1 where: an = nth term a1 = first term n = number of terms r = common ratio
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Here are the formulas..
Arithmetic Sequence
an = a1 + (n - 1)d
where:
an = nth term
a1 = first term
n = number of terms
d = common difference
.
Geometric Sequence
an = a1 r^n-1
where:
an = nth term
a1 = first term
n = number of terms
r = common ratio
that's the formula