kth term of an AP 1. 5, 9, 13 is 45 then find the value of K
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kth term of an AP 1. 5, 9, 13 is 45 then find the value of K
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Answer:
Given series is 1,5,9,13,17,…
Common difference (d)=5−1=4
First term is a=1
So n
th
term is t
n
=a+(n−1)d=1+(n−1)4=4n−3
∴t
n
=4n−3