Question

find the 19th term of the following A.P
7, 13, 19, 25,.....​

Answer 1

Answer:

a=7

d=6

n=19

a19=7+18×6

=7+108

=115

please mark as a brainliest answer

Answer 2

$\mathrm{solution⤵}$

$here,a = t1 = 7,t2 = 13,t3 = 19t4 = 25,...$

$d = t2 - t1 = 13 - 7 = 6$

$tn = a + (n - 1)d$

$\therefore \: t19 = 7 + (19 - 1) \times 6$

$= 7 + 18 \times 6$

$= 7 + 108$

$\therefore \: t19 = 115$

$\mathrm{ans.the \: 19th \: term \: is \: 115}$