Question

if an = 3+4n is nth term of an AP , then s 15 is ?
pls ita urgent ​

Answer 1

Step-by-step explanation:

ANSWER

Here a

n

=3+4n

∴a

1

=3+4×1=7

a

2

=3+4×2=11

a

3

=3+4×3=15

a

4

=3+4×4=19

.........................................

Hence, the given sequence is 7,11,15,19,...