Answer
a. 0
b. -24
c. 90
Work Step by Step
a. 7(0)(-6)
= 0(-6)
= 0
b. (-2)(-3)(-4)
= 6(-4)
= -24
c. (-1)(-5)(-9)(-2)
= 5(-9)(-2)
= -45(-2)
= 90
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