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N.C.TYAGI (student) (71 Points)

13 October 2011

The three number are in G.P these product are 729 and sum of these square is 819. find these three numbers...

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6 Replies

(Guest)

nos are 3 9 and 27

(Guest)

3 * 9 * 27 = 729

(3)^2 + (9)^2 + (27)^2 = 819

N.C.TYAGI (student) (71 Points)
Replied 13 October 2011

please explain how u can solve this..

N.C.TYAGI (student) (71 Points)
Replied 13 October 2011

please explain how u can solve this..

Syed Farzan (CA IPCC) (748 Points)
Replied 14 October 2011

Look.. 729 is a muliple of 3. And if you know GP you can easily arrive at the answer.

3, 3'2, 3'3.....

3*9*27= 729. and

the sum of the squares of 3. 9, 27

3'2+9'2+27'2=819..

Hope you understood..!

Sheena Maheshwari (ARTICLESHIP) (240 Points)
Replied 29 October 2011

take the 3 nos as a/b, a & ab

so a/b*a*ab=729

so a^3 = 729

so a=9

if you have this you can guess the rest of the nos.

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