Question

find the missing term of AP _,13_,3​

Answer 1

$\mathfrak{AnSwEr}$

ATQ, we find :

a + d = 13

a + 3d = 3

--------

0 + -2d = 10

=》 d = (-5)

Similarly, we find :

=》 a = 18

AP = 18, 13, 8, 3

Answer 2

As per your question,

We know that,

a + d = 13.. (1)

a + 3d = 3.. (2)

Subtracting (2) and (1)

0 + -2d = 10

➡️ d = -5

Thus, we get :

➡️ a = 18

A. P => 18, 13, 8, 3