Question

which term of the A.P. 30, 27, 24..... is the first negative term?​

Answer 1

Answer:

12th term.

Step-by-step explanation:

The given A.P. : 30,27,24….

Here, a= 24 , d= -3 , n=?

Let us first find which term will be 0.

Using the formula : an= a+(n-1)d

0=30-(n-1)(-3)

30–3n+3=0

30+3 = 3n

33 = 3n

n=33/3

n= 11

So 11th term will be 0. Hence 12 term will be first negative. Again using the same formula where n= 12, we get,

An= 30+11(-3)= 30 + ( - 33) = -3.

Hence first negative term is -3.

Answer 2

Answer:

12 term will be negative