Question

4,a,b,28,... Are in ap then value of b is

Answer 1

Step-by-step explanation:

a = 4, also a+0d = 4 -----(i)

d = ?

a = ? (a+d)

b = ? (a+2d)

a+3d = 28 -------(ii)

Solving eq. (i) and (ii),

a + 0d =4

a + 3d = 28

- - -

0a + -3d = -24

-3d = -24

d = -24/-3

d = 8

b = a + 2d

b = 4 + 2*8

b = 4 + 16

b = 20

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