4th term of A.P is 0 prove that 25th term of the AP is three times its a 11th term
Answers
Answered by
2
a+3d=0
therefore,a= -3d
now, we can write 11th term as
a+10d (put the value of a in this)
we get 7d
now we can write 25th term as a+24d
(put the value of a in this )we get
21d
therefore
11th term is 7d and 25 term is 21d
therefore 25 th term is 3 times that of 11th term
therefore,a= -3d
now, we can write 11th term as
a+10d (put the value of a in this)
we get 7d
now we can write 25th term as a+24d
(put the value of a in this )we get
21d
therefore
11th term is 7d and 25 term is 21d
therefore 25 th term is 3 times that of 11th term
Similar questions