Which term of a AP 5 , 13 , 21 ,... is 181?
Here,a(n) = a + (n-1)dHere, a = 5, d = 12-5 = 8, a(n) = 181Substitute this values in to the expression, 181 = 5 + (n-1)8181-5 = 8n-8176+8 = 8nn = 184/8n = 23So, it is 23th term of that Arithmetic Progression.Hope this helps!
