729 × 81−1/
3^2×243^-1
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Answer:
It is given that the first term of G.P is a
1
=729 and the second term is a
2
=243, therefore,
r=
a
1
a
2
=
729
243
=
3
1
We know that the formula for the nth term of an G.P is T
n
=ar
n−1
, where a is the first term, r is the common ratio.
It is given that the first term is a=729 and the common ratio is r=
3
1
, thus,
T
7
=729×(
3
1
)
7−1
=729×
3
6
1
=
729
729
=1
Hence, T
7
=1.
Step-by-step explanation:
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