Question

if the 7th and 11th term of an A. p are (-39) and 5 respectively then find out the 24th term​

Answer 1

Answer:

Step-by-step explanation:

nth term = a + (n-1)d

7th term--->   a + 6d   = -39  ------> equ 1

11th term ----> a + 10d = 5  -----> equ 2

subract  equ 2 from equ 1

            -4d = -44

               d = -44/-4  = 11

put d = 11  in equ 1,

             a + 66 = -39

                    a   = -39 -66

                     a = -105

24th term :   -105 + 23 * 11 = -105 + 253 = 148