Question

Which term of Ap
100,95,90,85,......,is -25?

Answer 1

d= 95-100= -5

a= 100

let the term is nth term

nth term, a_n = a + (n-1)d

⇒-25=100+(n-1)(-5)

⇒-125= -5n+5

⇒-5n=-130

⇒n=26