Permutations Possible for Six Digit Ordered Sample: 2,3,4,5,6,9
1. How many two digit numbers can be formed from the six digits: 2,3,4,5,6,9?
2. How many of these two digit numbers are less than 80?
3. How many of these numbers are even?
4. How many of these numbers are odd?
5. How many of these numbers are multiples of 5?
When completing the computations, repetitions are not permitted.