1.

If 5th term of an AP is zero, show that it\'s 33rd term is four times its 12th term.

Answer» a5 =0 a + 4d =0a = -4da33 = 4(a12)a+ 32d = 4( a+11d)put the value of a-4d + 32d= 4(-4d+11d)28d= -16d + 44d28d = 28d H.P.


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