12 and 15
The sum of the even numbers is (26 + 28 + ... + 100); The sum of the odd numbers is (25 + 27 + ... + 99) Their difference is: (26 + 28 + ... + 100) - (25 + 27 + ... + 99) = (26 - 25) + (28 - 27) + ... + (100 - 99) = 1 + 1 + ... + 1 There are (100 - 26) ÷ 2 + 1 = 38 terms above which are all 1; their sum is 38 x 1 = 38. So the difference of the sum of all even numbers and all odd numbers 25-100 is 38.
30 and 27
The answer is 27+415= 422. It is as simple as that!
24,26
7 & 9
The difference of 2 numbers is 32 the sum is 158 what are the 2 numbers?
The sum of the even numbers is (26 + 28 + ... + 100); The sum of the odd numbers is (25 + 27 + ... + 99) Their difference is: (26 + 28 + ... + 100) - (25 + 27 + ... + 99) = (26 - 25) + (28 - 27) + ... + (100 - 99) = 1 + 1 + ... + 1 There are (100 - 26) ÷ 2 + 1 = 38 terms above which are all 1; their sum is 38 x 1 = 38. So the difference of the sum of all even numbers and all odd numbers 25-100 is 38.
8 and 6 have a difference of 2 and a sum of 14.
30 and 27
The two numbers are 10 and 2
The numbers are 11 and 10
Three
24,26
The answer is 27+415= 422. It is as simple as that!
If they are equal numbers then n = n Hence n + n = 54 2n = 54 n = 54/2 n = 27 So 27 + 27 = 54
9 13
0.4 and 2.