Question

Find the term of the arithmettic progresion 9, 12 ,15

Answer 1

18, 21,24,27 is ur answer...... mark me as brainlist...

Answer 2

Let a1 = 9 , a2 = 12 , a3 = 15.

Difference :
a2 - a1 = 12 - 9 = 3
a3 - a2= 15 - 12 = 3

The difference between two adjacent members of the series are constant and equal..

So the formula An= a1 + (n-1)d

Here , a1=9 (first member of the series)
An= 15 (last member of the series)
d=3 (difference )
n=3 (number of members)

15 = 9 + (3-1)*3
15=9+6
15=15

Hence we can find the next terms by using this formula .....

The next terms of this series are 18 , 21 , 24 , 27 , 30 ......

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