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How many different combinations of addends are there in the sum of 7?
7
What six numbers average out to 4?
To find six numbers that average out to 4, we can use the formula for calculating averages: Average = (Sum of all numbers) / (Total number of numbers). Since we have six numbers, the sum of all numbers must be 6 * 4 = 24. To evenly distribute this sum, we can choose the numbers 3, 3, 4, 4, 5, and 5. Their sum is 24, and when divided by 6, the average is indeed 4.
What are the different combinations of all 4 digit numbers between 0000 and 9999 that add up to the sum of 8?
There are 165 of them and I do not have the patience to list them all.
How many addend combinations in the sum of 7?
8
How many 4 number combinations are there using numbers 0-9 with a sum of 18?
There are two ambiguities in this question. First, the numbers 0 through 9 could mean integers or real numbers. If you meant real numbers the answer is infinite, so I presume you mean integers. More to the point, it depends on whether you are only counting combinations of 4 different numbers or allowing duplications (like 4, 4, 5, 5).
