Answer:
D) is your correct answer
5x6=30
6x6=36
You would need 1 more 6
I can't explain this very well, sorry.
I belive the answer would be....
49.5-37.5=12
2•12=24
0.0000000861 is your answer
If I remember correctly this would be obtained from the factors of -24
so i think its +/-1, +/-2, +/- 3, +/- 4, +/- 8, +/- 6 , +/-12, +/-24
Sorry but i cant be sure