The 4th term of an A.P. is Zero. Prove that the 25th term of the A.P. is three ti
its 11th term.
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Step-by-step explanation:
a25=(a11)3....1
A4=0
a+3d=o
a=-3d.......2
a+24d
-3d+24d
21d..........3
3(a+10d)
3(-3d+10d)
3(7d)
21d..........4
from equation 3 and 4
a25=3(a11)
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