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IPMAT Indore 2019
MCQ Single Answer
＋
!
If
a
,
b
,
c
a, b, c
a
,
b
,
c
are real numbers and
a
2
+
b
2
+
c
2
=
1
a^2 + b^2 + c^2 = 1
a
2
+
b
2
+
c
2
=
1
, then the set of values
a
b
+
b
c
+
c
a
ab + bc + ca
ab
+
b
c
+
c
a
can take is:
A
[-1,2]
B
[-
1
2
\frac{1}{2}
2
1
, 2]
C
[-1,1]
D
[-
1
2
\frac{1}{2}
2
1
, 1]
Check Answer