Question

find the member of termsi in 2,6,18,......486.​

Answer 1

Answer:

@=6

Step-by-step explanation:

2×3^(@-1)=486

3^(@-1)=243

3^(@-1)=3^5

@-1=5

@=6

Answer 2

Answer:

an=a+(n-1)d

486=2+(n-1)4

2+4n-4=486

4n-2=486

4n=486+2

4n=488

n=488/4

n=122