Question

Please answer my question...........


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Answer 1

Answer:

Yes,

a+6d=11/7 x a+10d

7a+42d=11a+110d

4a+68d=0

a+17d=0

a18=0

Answer 2

(i) yes garima said correct formula to geetha

(ii)7th term =a+(7-1)d

=a+7d-d

11th term =a+(11-1)d

=a+11d-d

given, (7th term) =(11/7)(11th term)

(a+7d-d)=(11/7)(a+11d-d)

(7a+42d)=(11a+110d)

4a+68d=0

4(a+17d)=0

4(a+(18-1)d)=0

(a+(18-1)d=0

18th term of series =0

hope this helps you

please mark the answer as brainlest please

please mark the answer as brainlest please