Step-by-step explanation:
In part (d), we are shown how the sum of consecutive integers can be found. The sum is:
S = n (x + y) / 2
where n is the number of integers, x is the first integer, and y is the last integer.
We want to use this formula to find the sum of the numbers 101-110. We know there are 10 numbers between 101 and 110, so n = 10.
S = 10 (101 + 110) / 2
S = 1055
We used deductive reasoning to find the answer.
