Answer:
120 different ways
The total number of ways to do this is the product because of the fundamental counting principle[1]. So 5x4x3x2x1 = 5! (read as “5 factorial”[2]) = 120 different ways to line up those 5 people. Five people lining up essentially means 5 people sorting into 5 positions.
Answer:
80 + 4 + 2/10 or 0.2 + 2/100 or 0.02. When I wrote the fractions, it really depends on what your teacher taught you to do.
Step-by-step explanation:
8 x 10 + 4 x 1 + 2 x 1/10 + 2 x 1/00
That is just the explanation for the equation.
Answer:
r = 2
Step-by-step explanation:
We have the formula of 
Now, it is given that 
........ (1)
And we have to find the value of r which satisfy the above equation.
So, 
Now, we have to use the trial method to find the value of r.
For r = 1, 
Hence, r can not be 1.
Now, put r = 2, 
Therefore, r = 2 (Answer)
