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#1 2010-03-20 17:24:09
- soha
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gp
If the ratio between first three terms and first six terms of GP is 125 : 152. Find the common ratio.
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#2 2010-03-20 17:41:43
- ZHero
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Re: gp
you mean
If the ratio between SUM OF first three terms and SUM OF first six terms of GP is 125 : 152. Find the common ratio.
Right??:o
Last edited by ZHero (2010-03-20 17:42:15)
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#3 2010-03-21 03:01:10
- soha
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Re: gp
I dont know .. The question is given like this
If the ratio between first three terms and first six terms of GP is 125 : 152. Find the common ratio.
May be that SUM OF must be added... But it is not given in the book..
"Let us realize that: the privilege to work is a gift, the power to work is a blessing, the love of work is success!"
- David O. McKay
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#4 2010-03-21 04:03:01
- soroban
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Re: gp
. . . . . . .
. . . . . . . .
.
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#5 2010-03-29 22:54:51
- soha
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Re: gp
There Are Two Formulas To Find Sn In Gp
One , To Be Used When r>1 ,
Another, When r <1
Since We Dont Know R Here, How To Use This ??? This Formula Is To Be Used When r<1???? Why Did We Use This ??? Please Explain???
Last edited by soha (2010-03-29 22:55:34)
"Let us realize that: the privilege to work is a gift, the power to work is a blessing, the love of work is success!"
- David O. McKay
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#6 2010-03-30 02:22:50
- ZHero
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Re: gp
There Are Two Formulas To Find Sn In Gp
One , To Be Used When r>1 ,
Another, When r <1
Since We Dont Know R Here, How To Use This ??? This Formula Is To Be Used When r<1???? Why Did We Use This ??? Please Explain???
Hi!!
the formula for r<1 is used for Sum of Terms till Infinity!
it cannot be used here because the no. of terms is fixed (3 and 5) here!
the formula
whereas can only be used for r<1 and Sum to Infinity (not for 3 terms or 5 terms)
!!!
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#7 2010-04-01 02:46:57
- soha
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Re: gp
We came to know of the terms at the end , after solving..
At first , why must we use that one ??
i mean just by looking at the question , how can we come to know which formula has to be used?
"Let us realize that: the privilege to work is a gift, the power to work is a blessing, the love of work is success!"
- David O. McKay
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#8 2010-04-01 03:34:36
- ZHero
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Re: gp
...i mean just by looking at the question , how can we come to know which formula has to be used?
Read the Question once again...
If the ratio between first three terms and first six terms of GP is 125 : 152. Find the common ratio.
As the No. of Terms is Specified, we Can't Use the formula for Sum to Infinity!!! 
If two or more thoughts intersect, there has to be a point!
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