4
The factors that multiply to 120 and add up to -8 are -12 and 10. This is because when you multiply -12 and 10, you get -120, and when you add them together, you get -8. Thus, the pair of factors you are looking for is (-12, 10).
There ain't any. Nearest is 9½ and 10½.
The two numbers that add up to -18 and multiply to -24 are -12 and -6. When you add them together, -12 + -6 equals -18. When you multiply them, -12 * -6 equals 72, but since we need the product to be -24, the correct pairs are -12 and -6.
7 and 5
60
The numbers are: 12 and -2
16
24
23
-196
-155
-9