Question

Find the 20th term of AP:1, 3,5,7
please answer it
it's very urgent ​

Answer 1

Answer:

1,3,5,7,9,... are in A.P

First term=a=1

Common differenced=3−1=2

n

th

term=t

n

=a+(n−1)d

t

n

=1+(n−1)2=1+2n−2=2n−1

∴n

th

term is 2n−1

Step-by-step explanation:

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