Question

find 19 th term of ap : 7 , 13 , 19 , 25 ......​

Answer 1

a=7

d=6

t19= a+18d

= 7+18×6

=115

hope this answer will be helpful

.

Answer 2

an = a+ (n-1)d



a19 = 7 + 18*6



a19= 115







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