Question

given that ais the first term d, the common difference and an the nth term of the ap. a=3 d=-5 n=? an=248​

Answer 1

an=a+(n-1)d

248=3+(n-1)-5

248=3-5n+5

248=-5n+8

-5n=240

n=240÷-5

=-48

Answer 2

Hope this will helps u mate