Mathematics

Problem

Let the vectors

PQ

QR

RS

ST

TU

and

UP

represent the sides of a regular hexagon. Statement I

PQ \times (RS + ST) \neq 0

, because Statement II

PQ \times RS = 0

and

PQ \times ST \neq 0

a. Statement I is true, Statement II is true and Statement II is a correct explanation for Statement I. b. Statement I is true, Statement II is true but Statement II is not a correct explanation for Statement I. c. Statement I is true, Statement II is false. d. Statement I is false, Statement II is true.

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