The 4th term of the ap is 0 prove that its 25th term is triple its 11th term
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a4 =0
0 = a+3d => a= -3d
T. P. => a25 = 3a11
a11 = a + 10d
= -3d + 10d
= 7d
a25 = a + 24d
= -3d + 24 d
= 21d
= 3 × 7d
= 3 × a11 , hence proved
hope it helps you
0 = a+3d => a= -3d
T. P. => a25 = 3a11
a11 = a + 10d
= -3d + 10d
= 7d
a25 = a + 24d
= -3d + 24 d
= 21d
= 3 × 7d
= 3 × a11 , hence proved
hope it helps you
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