Question

3n ≤ 81, n ∈ N is a statement or not​

Answer 1

Answer:

Correct option is

D

8

Given,

3

n

=81

Since,

(3

n

)

=3

n/2

and 81=3

4

So, 3

n/2

=3

4

,

⇒

2

n

=4 (As bases are equal, their powers has to be) equal.

⇒n=8