Question

(Hint: Base
2. Write all possible 2-digit numbers that can be formed by using the digits 3, 7 and 9, if the repetition of
digits is allowed.
of the following​

Answer 1

9 numbers

Step-by-step explanation:

We know that a two-digit number has two places.

So, there will be 3 X 3 = 9 numbers. These are:

33, 39, 37,75 , 77 93, 95, 97, 73,