Question

Find the multiplicative inverse of (-1) x (-3) x (-5) x (-7).

Answer 1

Simplifying the product:

(-1) x (-3) x (-5) x (-7)
=> 1 x 3 x 5 x 7 (because the product of four negative integers is positive)
=> 3 x 35
=> 105

Now the multiplicative inverse of 105 is its reciprocal which is <!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> $\frac{1}{105}$