1 of 2

ARITHMETIC

PROGRESSIONS

  • Rule to find the next few terms

of an A.P.

2 of 2

1,

3,

5,

7,

…

a1

a2

a3

a4

For a given AP

a = a1

= 1

d = a2 – a1

= 3 – 1

= 2

By adding d to a term of an AP,

we get its next term

a2 =

a1 + d

= 1 + 2

= 3

a3 =

a2 + d

= 3 + 2

= 5

a4 =

a3 + d

= 5 + 2

= 7

Lets find a & d