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Which term of an Ap 21,18,15..........…..............is 0 |
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Answer» 21,18,15,............,na=21d=18-21 =-3an=0an=a+(n-1)d0=21+(n-1)-3-21=(n-1)-37=n-1n=88th term of an Appointment is 0 .Ans An=0 apply the formula of an. a+(n-1)d =0. 21+(n-1) (--3) = 0. 21-3n +3 =0 . 24-3n =0 -3n =-24 . n= 8. So the 8th term of the ap will be 0. |
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