Question

one is also a factor when multiplied by the original number. which two answers multiply to give you -999? 1 and 999 -1 and -999 -1 and 999 1 and -999

Explanation:

Step1: Check each option's product

For "1 and 999": $1\times999 = 999
eq - 999$
For "-1 and -999": $(-1)\times(-999)=999
eq - 999$
For "-1 and 999": $(-1)\times999=-999$
For "1 and -999": $1\times(-999)=-999$

Answer:

C. -1 and 999, D. 1 and -999 (Here we assume the options are labeled as A:1 and 999, B:-1 and -999, C:-1 and 999, D:1 and -999. The correct ones are the pairs whose product is -999, which are -1 and 999, 1 and -999)