Posted by la bellgoss on Saturday, March 19, 2011 at 2:18pm.
1)Find the sum of the first eight terms of the Geometric progression 256,128,64,32
2)How many terms should be taken from the Geometric progression 4,12,36 for the sum to be 2188
- math - Anonymous, Saturday, March 19, 2011 at 4:26pm
The sum of n numbers in Geometric progression is:
a1 is first number in progresion
q is the common ratio.
In your case:
S8=32*( -255)/( -1)
I am not shure that this question have solution.
Geometric progression in this case:
- math - Anonymous, Saturday, March 19, 2011 at 4:51pm
In first question:
- math - bobby, Monday, February 16, 2015 at 10:50am
In a geometric progression,the product of the 2nd and 4th terms is double the 5th terms and the sum of the first four terms is 80.find the gp
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