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hram777 [196]
3 years ago
12

Find 3 numbers in GP whose sum is 28 and product is 512​

Mathematics
1 answer:
SVETLANKA909090 [29]3 years ago
3 0

Answer:

<h2>4,8 and 16</h2>

Let the three numbers be a,ar, ar^2 ,

where r is the common ratio.

⇒a+ar+ar^2 =28 and a^3 r^3 =512

⇒ar=8⇒a+ar^2 =20

⇒8r^2 −20r+8=0

⇒r=2,r= 1/2

If r=2,a=4

Therefore, the three numbers are 4,8,16.

Step-by-step explanation:

Hope it is helpful.....

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