Question

if 3rd term and sum of 10th term of an ap is 15 and 125 respectively. find the common difference between them and the 10th term

Answer 1

Step-by-step explanation:

The first step is to find the common difference. Subtract the lower term from the higher term, and divide by the difference of the indices of the term.

d = (25–13)/(10–4)

d= 12/6

d=2

Now to find the first term use the following:

13 - (4–1)2

13 -3(2)

13–6

7

The 17th term is equal to the first term plus the difference of 17 and 1.

7+(17–1)2

7+(16)2

7+32

39

Please Mark as Brainlest

And thank my answer.