There are infinitely many answers.
Even restricting yourself to integers, you have:
[2, 16, 17] or [5, 19, 11] or [18, 32, -15].
greatest is 999 and least is 100
Negative first, then zero and then the positive.
Arrange them in order, least to greatest. Select the one in the middle.
102.
The numbers would be 8 + 10 + 12.
There are no greatest hole numbers nor least whole numbers so the question makes no sense.
Suppose the least number is x. Then the greatest is 2x and the middle is x+3. So x + (x+3) + 2x = 75 ie 4x+3 = 75 or 4x = 72 or x = 18 So the three numbers are 18, 21 and 36.
It is 2, 10, and 11
greatest is 999 and least is 100
Negative first, then zero and then the positive.
Average of three = 20 so total of three = 60; 60 - (28 + 15) = 60 - 43 = 17
The three greatest whole numbers less than 200 that each have an odd number of factors are 144, 169 and 196.
Arrange them in order, least to greatest. Select the one in the middle.
2 is the least of the three given numbers.
102.
The LCM or least common multiple of 3 and 5 is 15.The GCF or greatest common factor of 3 and 5 is 1.
This question is impossible given the current situation; for the average to equal 20, given 28 and 20 as two of the three, the third must be 12.If it were not stated that 20 was the least of the numbers, then the answer would indeed be 18, but, however, this not being the case, no answer is possible inside of the normal rational number system.