pleasehelpsme pleasehelpsme

10-06-2018
Mathematics

contestada

This is for permutations and combinations, what is the answer?

This is for permutations and combinations what is the answer class=

Respuesta :

jimthompson5910 jimthompson5910

10-06-2018

We can write "n C r" as "C(n,r)" which is more function notation in style.
C(n,r) = C(n,n-r) due to symmetry on Pascal's Triangle

Based on that rule
C(50,45) = C(50,5)
note how n = 50, r = 45, n-r = 50-45 = 5

Answer: Choice B

Answer Link

Otras preguntas

Approximate the area under the function between a and b using a left-hand sum with the given number of intervals. f(x) = x² + 2 a = 0 b= 6 6 intervals

Approximate the area under the function between a and b using a left-hand sum with the given number of intervals. f(x) = x² + 2 a = 0 b= 6 6 intervals

if the perimeter of an equilateral triangle is 24cm, find the length of it's side

write some Dangers of cutural Tourism an it is conclusion

Find the width and heigth of a newer 47-inch television whose screen has an aspect ratio of 4:3 Find the área of the screen

Select the correct sentence to describe your brother and sister. Be careful with the adjective agreement. Ils sont égoïstes.

1) Calculate the empirical formula for a chemical compound that gives the following analysis: 66.6 g titanium and 33.4 g oxygen. a) Ti_2O_3 b) Ti_2O c) TiO_3 d)

A scientist investigated whether giving plants different quantities of magnesium affected their growth. Hemeasured growth by counting the number of new leaves p

808, 408, 208,108, 68 find out wrong number.

need heeeelp please