20 & 3
17, 53, 71
129 - 112 = 17
10 + 7 = 1710 - 7 = 310 and 7
The only two digit numbers whose digits add up to 17 are 89 and 98. Since 98 is an even number, 89 is prime.
20 & 3
17, 53, 71
17 & 18 (306)
I think it will be 17. The sum of digits is 8, which is the cube of 2.
number of pairs of odd numbers whose sum is 32: 8pairs of odd numbers whose sum is 32:1, 313, 295, 277, 259, 2311, 2113, 1915, 17
20 and 37 Or , algebraically speaking : x + y = 57 x - y = 17 Adding the two equations together then 2x = 74 and so x = 37 y = 57 - x and so y = 20Or, not algebraically speaking: take the difference from the total and divide the result by two. This gives you the lowest number. Then add the difference to the lowest number and this will give you the higher number.
The consecutive integers whose sum is 51 are 16, 17, and 18.
129 - 112 = 17
10 + 7 = 1710 - 7 = 310 and 7
The only two digit numbers whose digits add up to 17 are 89 and 98. Since 98 is an even number, 89 is prime.
17 and 3 are two prime numbers whose sum is 20. Their product is 51.
3 and 17