UPSKILL MATH PLUS

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Learn more**Multiplication:**

When more than \(2\) numbers are multiplied, depending upon the number of negative numbers involved, the sign of the answer varies.

We know that,

\((-1) × (1) = -1\)

\((-1) × (-1) = +1\)

**Now**,

\((-1) × (-2) × (-3) = -6\)

\((-1) × (-2) × (-3) × (-4) = +24\)

\((-1) × (-2) × (-3) × (-4) × (-5) = -120\)

**Inference:**

When \(2\) negative numbers are multiplied, the result will be a

**positive**number.When \(3\) negative numbers are multiplied, the result will be a

**negative**number.When \(4\) negative numbers are multiplied, the result will be a

**positive**number.**Conclusion:**

From the above, we can conclude that,

Number of negative integers in multiplication | Sign of the result |

Even | \(+\) |

Odd | \(-\) |