1.

Is 302 a term of the A.P. 3, 8, 13, ...?

Answer»

a=3

d=8-3=5

An=302

An=a+(n-1)d

302=3+(n-1)5

302-3=(n-1)5

299=5n-5

299+5=5n

304=5n

n=304/5

So it is not the term of the A.P because it is in the fraction form.



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