Question

the nth term of an ap is n=3 + 4n.the first term is ?​

Answer 1

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,...

Answer 2

Answer:

7

Step-by-step explanation:

n=3+4n

if we put 1 in the place of n,

a1=3+4(1)

=7