8) Find five numbers in G. P. such that their
product is 1024 and fifth term is square of the
third term.
Answers
Answered by
42
Answer:
1 2 4 8 16
1 -2 4 -8 16
Step-by-step explanation:
Find five numbers in G. P. such that their
product is 1024 and fifth term is square of the
third term.
Let say 5 numbers in GP are
a , ar , ar² , ar³ ar⁴
fifth term is square of the third term.
=> ar⁴ = (ar²)²
=> ar⁴ = a²r⁴
=> a = a²
=> 1 = a
five numbers are
1 , r , r² , r³ r⁴
Products of five number of GP
= 1 * r * r² * r³ * r⁴
= r¹⁰
product is 1024
=> r¹⁰ = 1024
=> r = ±2
GP
1 2 4 8 16
1 -2 4 -8 16
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