What is the sum of the first 10 terms of the geometric sequence 4, 2, 1?
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What is the sum of the first 10 terms of the geometric sequence 4, 2, 1?
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Answer:4092
Step-by-step explanation: r=a2 = 4/2= 2
a1
Sn= a1- a1r^n
1-r
= 4-4(2^10)
1-2
=4-4(1024)
-1
=4-4096
-1
=-4092/-1
=4092
Answer:
The answer is S10 = 4,092