Monday, February 5, 2007

"ALGEBRA QUESTION OF THE DAY"

If r = (3p + q)/2 and s = p - q, for which of the following values of p would r2 = s2?
  1. 1q/5
  2. 10 - 3q/2
  3. q - 1
  4. 3q
  5. 9q/2 - 9
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8 comments:

goyalakshay said...

wat do u mean by R2 n S2

February 6, 2007 at 7:41 AM
Unknown said...

same Q here...
if its jus r and s thn the answr is -3q

February 6, 2007 at 8:32 AM
Unknown said...

true whats R2 and S2
if its taken as 2R and 2S then it means its equal to r=s
and in that case the value is -3q which matches a bit with option D except the negative sign.
Hence question is wrong!

February 6, 2007 at 11:26 AM
Anonymous said...

a
r2(rsquare)=s2{s square)
r2-s2=0
(r+s)(r-s)=0
ie (5p-q/2)(p+3q/2)=0
implies p=q/5 or p=-3q

hence ans is A

February 7, 2007 at 9:24 AM
Unknown said...

ans is A no doubt abt it

February 10, 2007 at 7:15 AM
Anonymous said...

a is answer

February 11, 2007 at 5:36 PM
Anonymous said...

answer is d no doubt about it

February 15, 2007 at 7:26 PM
Anonymous said...

Answer is A:
consider (R)square=(S)square...that is what is meant by R2=S2
solving the equation gives you
(5p-q)(p+3q)=0
so p is either q/5 or -3q
so answer is A as -3q is not given in the options...

March 29, 2007 at 6:39 AM

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