how many different two-digit numbers greater than 50 can be formed from the digits 3,6,7, and 9 of repetition of digits is allow

Question

lesantik [10]

3 years ago

6

how many different two-digit numbers greater than 50 can be formed from the digits 3,6,7, and 9 of repetition of digits is allow

ed?

Mathematics

1 answer:

nalin [4] · Answer 1 · 2022-06-30T14:08:02+03:00

nalin [4]3 years ago

8 0

First of all the repeated digits numbers are 66,77 and 99 Total 3
Numbers beginning with 6 Total 3 (63,67 and 69).
Numbers begin with 7 Total3
and begin with 9 Total 3.

answer is 12