For each of the subsets of the two properties (a) and (b), count the number of four-digit numbers whose digits are either 1, 2, 3, 4, or 5.
(a) The digits are distinct.
(b) The number is even.
Note that there are four problems here: (1) when both conditions are met; (2) when only condition (a)
is met; (3) when only condition (b) is met; (4) when neither condition is met.

answer: yard ramps with a level off platform are typically 36 feet long. truck, rather than at an angle, enabling access to those pallets at the very back of the truck. if you are using your yard ramp to convert a loading dock into a drive-in door, we even at 60 inches (5 feet) high and a 30 foot ramp, the slope of the ramp will be less

step-by-step explanation:

b

think the answer would beb