Question

First term and the common difference in a.p.: 6,9,12,15,...is

Answer 1

Answer:

18,21,24...........

Answer 2

Answer:

PLEASE MARK AS BRAINLIEST.

"a" is an abbreviation used for the first term of an A.P.

In this A.P

$a = 6$

now we use the letter"d" to represent the common difference.

In this A.P

$d = second \: term - first \: term$

or

$d = forth \: term - third \: term$

therefore

$d = 9 - 6 = 3$

therefore the common difference of this AP is 3 and the first term is 6.

HOPE IT HELPS YOU