Question

I
Find the 19th term of an A.P.
7,13,19, 25. ...​

Answer 1

The give sequence is 7, 13, 19, 25

Here,

First term (a) = 7

Common difference (d) = a₂ - a₁ = 13 - (7) = 6

Now,

a₁₉ = a + (n - 1)d

     = 7 + (19 - 1)6

     = 7 + (18) - 6

     = 115

Hence, the 19th term of the progression is 115

Answer 2

a=7, d=6, n=19

a=a+(n-1)d

Nineteenth term,

a19= 7+(19-1)6

= 7+108

= 115

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19th term is =115

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HOPE THIS HELPS