Question

solve the question fast​

Answer 1

Step-by-step explanation:

Here, t3 = a + 2d = 7 .....(i) and t6 = a + 5d = 13 .........(ii)

Subtracting (i) from (ii)

t6 - t3 = 5d - 2d = 6

3d = 6

d = 2

Substituting d = 2 in (i)

a + 2× 2 = 7

a + 4 = 7

a = 3

Answer 2

heRe Step by Step

a3=7

a+2d=7-------- eq1

a6=13

a+5D=13--------eq---2

Sub 2_1

2D= 6

D= 6/2=3

d = 3 .........