Question

What is the largest number that can be produced by multiplying any three individual numbers from the following list [-2, 1, 3, -8, 5, 9, -9, 4, 7, -7, 8]

Answer 1

The answer is 648 multiply 9 and -9 and -8

Answer 2

we know that

To obtain the largest number that can be produced by multiplying any three individual numbers we have two cases

case 1) multiply the two largest negative numbers by the highest positive number

So

$(-9)*(-8)*(9)=648$

case 2) multiply the three largest positive numbers

$(9)*(8)*(7)=504$

$648 > 504$

therefore

the answer is

the numbers are $-9,-8,9$