In the following APs, find the missing terms in the boxes :

Advertisement Remove all ads

#### Solution

For this A.P.,

a = 5 and

a_{4} = `19/2`

We know that, an = a + (n − 1) d

a_{4} = a + (4 - 1) d

`19/2` = 5 + 3d

`19/2-5 = 3d`

`9/2=3d`

d = 3/2

a_{2} = a + (2 - 1) d

a_{2} = 5 + 3/2

a_{2} = 13/2

a_{3} = a + (3 - 1) d

a_{3} = 5 + 2×3/2

a_{3} = 8

Therefore, the missing terms are 13/2 and 8 respectively.

Concept: nth Term of an AP

Is there an error in this question or solution?

#### APPEARS IN

Advertisement Remove all ads