Write the 15th term of Arithmetic Progression 5, 9, 13, ......
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5
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
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