Question

23rd term of an arithmetic sequence is 32. 35th term is 104.find its first term ?​

Answer 1

Answer:

Step-by-step explanation:

Given:

a+22d=32

a+34d=104

Subtracting both the equations we get:

12d=72

d=6

Substituting value of d in any of the equation we get a= -100

In the first 35 terms , 18th term will be the middle most term...

a+(n-1)d = a18

-100 + 102

2 is the middle most term.

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