HR Interview
Interview
Logical Reasoning
Answer please. . .
if a,b,c are greater than 0 and (a+b+c)*(ab+bc+ca)=3z, what can be said about z...?
A) z3abc D) z=3abc
Thanks in Advance. . .
Read Solution (Total 2)
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- apply AM > = GM
(a+b+c) > = 3* (abc)^(1/3) ----------(1)
(ab+bc+ca) > = 3* (ab*bc*ca)^(1/3) -------------(2)
multiply (1) & (2)
(a+b+c)*(ab+bc+ca) > = 9abc = 3z
=> z = 3abc
is it clear 2 u ? - 10 years agoHelpfull: Yes(6) No(1)
- its only abc nt 3abc or z3abc, coz its a formula
- 10 years agoHelpfull: Yes(0) No(0)
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