Answer:
9×9×8×7×6= 27,216
Explanation:
Your answer is :- 9×9×8×7×6= 27,216
Why did i multiply 9×9×8×7×6 ⤵️
Because we can fill each place of a five digit number with ten digits (0,1,2,3,4,5,6,7,8,9).
Now, let us assume the five digit number is abcde, where each alphabet represent a digit.
so according to our question a cannot be equal to 0 ( a≠0), because if a will be equal to zero then our number will be a four digit number. So a can be equal to 9 digits.
b digit can also be equal to 9 numbers. why??because we can place zero on the position of b and only one number will not be repeated which is a.
Now for c, d, e :- accordingly no number will be repeated so on the place of c, there can be 8 digits. On the place of d, there can be 7 digits. And on the place of e there can be 6 digits.
Therefore,
a×b×c×d×e=9×9×8×7×6=27,216