5+2 6+1
64
20
51
4, 226, 208, 1810, 1612, 14The sum of each pair is 26 and both the numbers in a given pair are composite numbers.=======================The answer to the question is: 5
There are infinitely many pairs of numbers that will add to 105.8 and infinitely many pairs of numbers that will multiply to 105.8 but there are no pair that will add AND multiply. I do not think there are larger sets, but I could be wrong. One example of a triplet adding and multiplying to the same number is 1, 2 and 3. They add to 6 and multiply to 6.
64
2 and 3 2 and 5 2 and 11
0+1=1 0.1+0.9=1 0.2-0.1=1
20
51
41,2
4950. If you add the pairs (1+99)+(2+98)... You get 100 for each pair. There are 49 pairs, and the 50 stands alone. So 4900 +50 is 4950.
10
You add the numbers. Then you divide by the number of numbers (i.e., if you have three numbers, you divide the sum by 3).You add the numbers. Then you divide by the number of numbers (i.e., if you have three numbers, you divide the sum by 3).You add the numbers. Then you divide by the number of numbers (i.e., if you have three numbers, you divide the sum by 3).You add the numbers. Then you divide by the number of numbers (i.e., if you have three numbers, you divide the sum by 3).
4, 226, 208, 1810, 1612, 14The sum of each pair is 26 and both the numbers in a given pair are composite numbers.=======================The answer to the question is: 5
20
There are infinitely many pairs of numbers that will add to 105.8 and infinitely many pairs of numbers that will multiply to 105.8 but there are no pair that will add AND multiply. I do not think there are larger sets, but I could be wrong. One example of a triplet adding and multiplying to the same number is 1, 2 and 3. They add to 6 and multiply to 6.