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.
<span>The exponent of a number says how many times to use the number in a multiplication.</span><span>In 82 the "2" says to use 8 twice in a multiplication,
so 82 = 8 × 8 = 64
</span><span>In words: 82 could be called "8 to the power 2" or "8 to the second power", or simply "8 squared"</span>
Answer: A is the correct option "Place the compass needle on M and, keeping the compass width the same, draw two arcs that intersect AB←→".
Step-by-step explanation:
In the construction of a line perpendicular to AB←→ and passing through an external point M the first step must be"Place the compass needle on M and, keeping the compass width the same, draw two arcs that intersect AB←→". After that you can draw arcs from intersection points (keeping the compass width same as before) to the opposite side of M, name it as N than use straightedge to draw line passes through M and n that would be perpendicular line to AB.
Here are the steps to answer this question:
1. Find the denominator. Since there is 8 possible outcomes, our denominator will be 8.
2. Find the numerator. To do this we need to find out of all the 8 possible outcomes, how many are them are y. Since its only 1 y, the numerator will be 1.
3. Now all we have to do now is make our fraction. The 8 possible outcomes given, only one of them has y which means that our fraction will be 1/8.
4. Answer: 1/8 or .125 or 12.5% chance for the spinner to land on y. I hope this helps!