Question

the 4th term of the ap is zero prove that the 25th term of the ap is 3 times its 11 term

Answer 1

Hiii friend,


4th term = 0

a + 3d = 0

a = -3d....(1)

25th term = 3(11th term)

a + 24D = 2(A + 10D)

-3D + 24D = 2(-3D + 10D)


21D = 2(7D)


21D = 21D...... PROVED......



Hence,


25th term of an AP is equal to 3 times it's 11th term .



HOPE IT WILL HELP YOU...... :-)