IPMAT Indore 2019 (MCQ) PYQs

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IPMAT Indore 2019

Algebra

Identities

Hard

If $a, b, c$ are real numbers and $a^2 + b^2 + c^2 = 1$ , then the set of values $ab + bc + ca$ can take is:

[-1,2]

\frac{1}{2}

, 2]

[-1,1]

\frac{1}{2}

, 1]

Correct Option: 4