Answer:
2 & 4
Step-by-step explanation:
1) -6(-4)(-1):
This one you would multiply one at a time. So -6 * -4 is -24 but then you multiply it by -1 so the answer is 24.
2) -1(-1)(-1)(24):
Same thing one at a time. -1 * -1 is 1 then 1 *-1 is -1 and now we multiply it by 24 which is -24. This one is correct.
3) 24 divided by 1:
This one is simple 24 divided by 1 will still be 24 which is not what we want.
4) -240 divided by 10:
This one is pretty much the same. -240 divided by 10 is -24. So this one is also correct.
5) -8(3)(-1):
This one is like the first ones, one step at a time. -8 * 3 is -24 then times -24 and -1 which is 24. This is false.
6) -2(-12):
This one is simple, -2 * -12 is 24 but it's not what we want so it's false.
