The 4th term of AP is zero. Prove that the 25th term of the AP is three times it's 11th term.
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Hello friend I hope you may understand this
A.T.Q
a+3d=0
therefore a=-3d
A.T.Q
we should prove a+24d =3(a+10d)
a+24d=-3d+24d=21d. (a=-3d)
a+10d=-3d+10d=7d........(1)
therefore 7d=3(7d)=21d{....=(1)}
A.T.Q
a+3d=0
therefore a=-3d
A.T.Q
we should prove a+24d =3(a+10d)
a+24d=-3d+24d=21d. (a=-3d)
a+10d=-3d+10d=7d........(1)
therefore 7d=3(7d)=21d{....=(1)}
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