numbers
Tue, 2008-05-27 14:01
Q1. p, q and r are thee real numbers such that p + q + r = 4 and p^2 + q^2 + r^2 = 6, then what can be the maximum value of q?
ans:
a. 3
b. 2
c. 8/3
d. 4/3
Q2. what will be the value of p when q is minimum?
a. 2
b. 5/3
c. 10/3
d. 3
Soln.
Try at first.At a glance get q=2.But dn try wd >2 i mean wd 8/3,But its impossible.As,64/9>6
So,
If q=2,p=1,q=1
So p^2+q^2+r^2=1+4+1=6
So Option (b) is correct.....
Giv ur best to d world.
Nd d best will cm back to u...
Regards,
Dipanjan.......
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