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vikram4689
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Is x negative?
1) x^3 (1-X^2) < 0
2) x^2 - 1 < 0
My Anwser:
for 1) take x as +ve =3 (say) then x^3 (1-X^2) <0
now take x as -ve =-3 (say) then x^3 (1-X^2) >0 which contradicts the given statement so we can deduce that x is +ve which an answere so this statement (given in 1) is sufficient
for 2) take x as +ve =3 (say) then x^2 - 1<0
now take x as -ve =-3 (say)then x^2 - 1<0 .so ths statement is insufficient as we cant deduce whether x is -ve or +ve
so Answer should be A but OA is C
1) x^3 (1-X^2) < 0
2) x^2 - 1 < 0
My Anwser:
for 1) take x as +ve =3 (say) then x^3 (1-X^2) <0
now take x as -ve =-3 (say) then x^3 (1-X^2) >0 which contradicts the given statement so we can deduce that x is +ve which an answere so this statement (given in 1) is sufficient
for 2) take x as +ve =3 (say) then x^2 - 1<0
now take x as -ve =-3 (say)then x^2 - 1<0 .so ths statement is insufficient as we cant deduce whether x is -ve or +ve
so Answer should be A but OA is C
