Answer:
5 different numbers, 2 even
Step-by-step explanation:
Since we have 5 digits and they are non repeating we can use the permutation formula:

It gives us the amount of ways to arrange k objects out of n objects without repetition, but order does matter.
In our case the amount of 4 digit numbers that can be formed using the digits from 1 to 5 is: 
And out of those 5, only 2 are even
Answer:
X=28
Step-by-step explanation:
3x-8=2x+20. So x=28
Answer:
18
Step-by-step explanation:
Hope this helps!
Answer:
C
Step-by-step explanation:
Now there are 6+4+8+1+1=20 dads in the Dads Club.
Fewer than 3 children have
- 1 child - 6 dads
- 2 children - 4 dads.
So, 6+4=10 dads have fewer than 3 children.
The probability that the dad of Dads Club has fewer than 3 children is

The probability that the next dad to join Dads Club has fewer than 3 children is reasonable to be 50%.
56*(4+15/60)
56*(240+15)/60
56*(255)/60
238 miles