Question

7,13,19,.........,205 number of term in each ap

Answer 1

Heya !!!



AP = 7,13,19......,205



Here,



First term ( A ) = 7


Common Difference ( D ) = 13-7 = 6



Last term ( Tn) = 205


Number of terms ( N ) = ?




Tn = 205



A + ( N - 1 ) × D = 205



7 + ( N - 1 ) × 6 = 205



7 + 6N - 6 = 205


6N = 204


N = 204/6 = 34.



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Answer 2

Ap : 7 , 13 , 19 , ................, 205.

let first term be a .
Common difference be d.

So, a = 7 , d = 13 - 7 = 6 , An = 205.

An = a + (n - 1)d

205 = 7 + (n - 1)6

205 - 7 = (n - 1)6

198 = (n - 1)6

(n - 1) = 198/6

n - 1 = 33

n = 33 + 1

n = 34

hence, 205 is 34th term.