Question

If the 5th term of an AP is zero,prove that its 23rd term is 3 times its 11th term

Answer 1

5th term = 0


a + 4d = 0


a = -4d





To prove : 23rd term = 3 ( 11th term )



a + 22d = 3 ( a + 10d )



-4d + 22d = 3 ( -4d + 10d )



18d = 18d .......PROVED......

Answer 2

Hey !!


5th term = 0

a + 4d = 0

a = -4d


23rd term = 3(11th term )

a + 22d = 3 ( a + 10d )

-4d + 22d = 3 ( -4d + 10d )

18d = 18d