Question

If for any A.P.,d=5 t18 -t13=

Answer 1

Hey.

Here is the answer.

d= 5

as Tn = a+ (n-1)d

so, T18 = a + 17d

so, T13 = a + 12d

So, T18 - T13 = (a + 17d) - (a +12d) = 5d

Thanks.

Answer 2

d = 5

T(18) - T(13) = a + 17d - a - 12d

=> 0 + 5d

given that d = 5

=> 5(5)

=> 25


I hope this will help you

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