The question has infinite correct answers. Some are -8 and 0, -7 and -1, -9 and 1, etc.
31 & 67
9 and 36
When you add two or more prime numbers you will only end up with a whole number and not a decimal number.
No two prime numbers can add to 119.
To make the list of two-digit numbers with digits that add up to 10, first write the pairs of single-digit integers that add up to 10. They are (1,9), (2,8), (3,7), (4,6), (5,5). Then recognize that each of these pairs of numbers, except 5, can be combined in two different ways to make two-digit numbers that satisfy the problem. 19 and 91 28 and 82 37 and 73 46 and 64 55 So there are nine two-digit numbers with digits that add up to 10.
I am not sure if any two consecutive numbers can add up to an even number.
31 & 67
9 and 36
4 and 9.
137 and 11 are two prime numbers that add up to 148.
28 and 10 are both triangular numbers and add up to 38
When you add two or more prime numbers you will only end up with a whole number and not a decimal number.
4 and 7
No two prime numbers can add to 119.
To make the list of two-digit numbers with digits that add up to 10, first write the pairs of single-digit integers that add up to 10. They are (1,9), (2,8), (3,7), (4,6), (5,5). Then recognize that each of these pairs of numbers, except 5, can be combined in two different ways to make two-digit numbers that satisfy the problem. 19 and 91 28 and 82 37 and 73 46 and 64 55 So there are nine two-digit numbers with digits that add up to 10.
It is not clear whether you want to add the two numbers, multiply them, or what. Moreover, in each case there are an infinite number of possibilities.
The two square numbers that add up to 225 are 144+81 = 225