Question

7 times of 7 th term of ap is equal to 11 times of 11 th term .then 18 th term of ap is?

Answer 1

7(7th term) = 11(11th term)

7(a + 6d) = 11(a + 10d)

7a + 42d = 11a + 110d

42d - 110d = 11a-7a

-68d = 4a

-68d/4 = a

-17 d = a -----1equation


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18th term = a + 17d

Putting the value of a from 1equation

18th term = -17d + 17d

18th term = 0



I hope this will help you

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Answer 2

Hey! Here is ur answer...

Hope this helps u... Plz mark it as brainliest... :)