Question

The common difference of arithmetic seqence is -1 and it's 4 th term is 7 . what is it's 7 th term and 11 th term? ​

Answer 1

Step-by-step explanation:

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Answer 2

Good morning dear friend, Here is the answer to your question,

Let the A.P be a1,a2,a3,7,a5,a6,a7,a8,a9,a10.a11 and so on

d = -1

a4= 7

we know that,

a4 = a3 + d

a3 = a4 - d

7 = a3 -1

a3= 8

similarily,

a7= a4 +3d

a7 = 7 - 3

a7=4

and

a11 = a4 + 7d

a11= 7 - 7

a11=0

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