4,5,6,7,8,9 and 10
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6 and 4
Assuming you mean 4 consecutive whole numbers, the answer is number that can be expressed as 4n+10 where n is an integer.
Whole numbers are 3 4 5 6 7 8 9
Both 10 and 1000 are individual whole numbers.
You know that sum of the first n whole numbers is n(n+1)/2. ( it is the same as the first n natural numbers since the zero does not add anything) So lets say you want the sum of all the whole numbers between 3 and 10. ( I made it easy to illustrate the idea.) The sum of the whole numbers between 0 and 3 is 3(4)/2=6 The sum of the whole numbers between 0 and 10 is 10(11)/2=55 So the sum of the whole numbers between 3 and 10 is the (sum of the whole number between 0 and 10) -(sum of whole numbers between 0 and 3) which is 55-6=49 So in general, for whole numbers m and n with m