15.5+15.5=35.
The given numbers of 15 and 35 are not prime numbers but they add up to 50
There are no four consecutive whole numbers that add up to 35. The sum of two consecutive [whole] numbers is an even number plus an odd number which is an odd number. The sum of two consecutive numbers and the two next consecutive numbers is the sum of two odd numbers which is even, but 35 is odd, so no four consecutive whole numbers cannot add up to 35.
161
-397
324
-5 and -7
35
35
None. If you add two even numbers, you'll end up with another even number.
To find the average of 35, you would simply add up all the numbers you want to average and then divide by the total count of numbers. In this case, since you only have one number (35), the average would be 35. This is because the sum of 35 divided by the count of 1 is still 35.
357
35