Question

503 term of sequence 9 13 17 21

Answer 1

Here the sequence is in AP series
Here a=9 ,d=4 and n=503
and formula apply a +(n-1) ×d
=9 + (503 - 1 ) ×4
=9+502×4
=9+2008
=2017

Answer 2

Answer:No it is not a term of the series

Step-by-step explanation:Because

a =9 ( first term)

d = 4 (common difference (second term - first term))

Tn = a+(n-1)d. [Formula]

503 = 9 +(n-1)4

503 = 9+4n- 4

503=4n+5

503-5=4n

498/4 =n

n =124.5

If we get n=0 for any sum then it is a term of the series else it is not.

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