Question

Which expressions have a positive product? *

–(5)(–0.2)(–1.9)(9)



–(2.14)(1.6)(14)



(6.3)(–8.7)(0.7)



(8.5)(–0.4)(–2.7)

Answer 1

The fourth choice is the correct one.

Explanation:

If the count of negative signs is even, the product is even (positive).

This does not apply to the first choice; this expression is odd.

Same for the second choice.

Same for the third choice. The expression is odd.

The fourth choice is POSITIVE because there are an even number (2) of negative signs.