Question

The seventh term of an AP is 29 and its seventeenth term is 69. Find its 30th term.​

Answer 1

Step-by-step explanation:

we have, a+6d=29 and a+16d=69

so, by subtracting eq. (1) from eq (2)

we get, d=4

by patang putting value of d in equation 1 or 2

we get a= 5

now 30th term is written as a+29d

by putting the value of a and d

in this equation we get 30th term equals to 121