9 and 36
31 & 67
When you add two or more prime numbers you will only end up with a whole number and not a decimal number.
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.
No two prime numbers can add to 119.
I am not sure if any two consecutive numbers can add up to an even number.
The list of cubes are: 1,8,27 Which two numbers add up to 28? I think you can see which ones.
4 and 9.
9 and 36
31 & 67
There is no pair of perfect squares that add up to 64.
137 and 11 are two prime numbers that add up to 148.
When you add two or more prime numbers you will only end up with a whole number and not a decimal number.
28 and 10 are both triangular numbers and add up to 38
4 and 7
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.
No two prime numbers can add to 119.