There is no pair of real numbers that can do that.
The numbers are
5 + j 3.87298
and
5 - j 3.87298
no 3 numbers add to equal 10 and multiply to equal 40.
Amongst others they can be 2+3+15 = 20 which is a multiple of 10
Not with negative numbers. -10 is a multiple of -2.
The numbers are: 21 and -10
-154
Any two of the same numbers. The GCF and LCM of 10 and 10 is 10.
10 and 20, among others. -- Pick any multiple of 10. -- Add 10 to it. -- There you have two numbers whose GCF is 10.
To find five numbers that equal 40, you can use any combination of numbers that add up to 40. For example, you could use 8, 8, 8, 8, and 8. Another combination could be 10, 10, 5, 5, and 10. As long as the sum of the five numbers equals 40, there are multiple possibilities for the specific numbers you can use.
18 and 10 18 x 10 = 180 18 + 10 = 28
-82
44
-78