Question

a= -1 & d=1/4 find the value of T3 of an AP​

Answer 1

Answer:

T3 = -1/2

Solution:

given a = -1, d = 1/4 of an AP, n = 3

to find T3

Tn = a + (n - 1)d

=> Tn = -1 + (3 - 1) * 1/4

=> -1 + 2*1/4

=> -1 + 1/2

=> -1/2