1.

Find the nth term when the AP is 3,8,1 3,.......

Answer» Yes it is in AP... The nth term will be 5n-2n=a+(n-1)dn=3+(n-1)5n=3+5n-5n=5n-2 Therefore the nth term for the given AP is 5n-2
It is in AP(3,8,13,....)
The given series is not in AP.


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