Question

please answer the question
check weather - 25 is a term in the progression 5 , 3 , 1 , - - - - - or not ?

Answer 1

Answer:

16 th term

Step-by-step explanation:

In this ap,

 a = 5

 d = -2

Let -25 be the nth term of this ap. then,,

  -25 = 5 + (n - 1)(-2)

  -25 = 5 -2n + 2

  -25 = 7 - 2n

   2n = 32

   n = 16

n is the whole number

So, -25 is the term of this ap and that too 16 th term

Answer 2

First term, a = 5 ; common difference, d = 3 - 5 = -2

As an=a+(n−1)d ⇒−25=5+(n−1)(−2)

−30=−2n+2⇒2n=32⇒n=16

⇒−25 is 16th term of A.P.