Answer:
43
Step-by-step explanation:
253,248,243,.
this is an arithmetic progression
here
first term (a)=253
common difference (d)=248-253= -5
number of term (n)=43
Now using the formula nth term of arithmetic progression is
an=a+(n-1)d
a43=253+(43-1)(-5)
a43=253+(42)(-5)
a43=253-210
a43=43
