Math, asked by mkarthik25100, 6 months ago

write the 12 th term in the series 25,-5,1,....

Answers

Answered by SandeepAW

1

Answer:

25,-5,1,......

a12=?.

First term=a=25.

Common Difference=d=a2-a1=-5-25=-30. (Because -×-=+ & largest number is important).

an=a+(n-1)d.

a12=25+(12-1)(-30).

=25+(11)(-30).

=25+(-330).

=25-330. (Because +×-=-).

=-305. (Because +×-=- & largest number is important).

I think this is your answer.

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