Question

10. () Find the middle term of the AP:6, 13, 20, ..., 216.
(ii) Find the middle term of the AP: 213, 205, 197, ..., 37.​

Answer 1

Answer:

1. Middle Term = 111 i.e. 16th term
2. Middle Term = 123 i.e. 12th term

Explanation:

Use the formula attached to calculate the total terms of A.P i.e. calculate 'n' in the formula.

For the first A.P it is 31. So middle term will be 16th term.

For the second A.P it is 23. So the middle term will be 12th term.

Calculate the 16th and 12th term of both A.P respectively using same formula.

Hope it helps