This thing (the problem lol) is an arithmetic progression.
there's a formula for this type of problem.
Let's say A is the first term and An is the last term, and d is how much each number is increasing from the last. so first we should first find the number of terms in the progression. the equation is:
An = a+(n-1)d
so ya plug in the values:
There are 50 terms in all…
Now the sum of these fifty terms:
Sn = n/2(A+An)
Sooooo the answer is 25*100 = 2500