Question

sum of first 55 terms in an ap is 3300 find the 28th term​

Answer 1

Answer:

The value of 9/24 × 2/5 ÷ 9/12 *

Answer 2

Step-by-step explanation:

Sum of first n terms of an AP is S =

$\frac{n}{2} (2a + (n - 1)d$

here n = 55

3300 = 55/2 ( 2a+54d)

6600 = 55 (2a+54d)

120 = 2a+54d

60 = a+27d

Nth term of an AP is

$a + (n - 1)d$

A28 = a+27d

so the 28th term is 60