This question is based on Combination.
Part A: when the elevator operator cannot distinguish people.
Now there are 8 people and 6 floors and the number of floors keeps decreasing by 1.
so 8+6-1=13
applying combination ways.
Part 2: When the elevator operator identifies between men and women.
there are 5 men and 3 women.
Number of ways to select 5 men = 5+6-1 =10
Applying combination ways.
Number of ways to select women= 3+6-1=8
Applying combination ways
Total number of ways = 252*56 = 14112 ways.
Answer:
n+3
Step-by-step explanation:
the relationship between those numbers are consistently adding 3 thus n +3
Answer: X = 34
Step-by-step explanation:
Let's solve your equation step-by-step.
x+30=2x−4
Step 1: Subtract 2x from both sides.
x+30−2x=2x−4−2x
−x+30=−4
Step 2: Subtract 30 from both sides.
−x+30−30=−4−30
−x=−34
Step 3: Divide both sides by -1.
−x
−1
=
−34
−1