The windows of a downtown office building are arranged so that each floor has six fewer windows than the floor below it. If the ground floor has 52 windows, how many windows are on the eighth floor?

Question

hartnn · Answer

this is the problem of arithmetic sequence.
here 1st term a=52
the common difference will be -6
and u have to find n=8th term
the formula would be
Tn=a+(n-1)d
so just put,a=52,d=-6 and n=8 to get your answer T8