racheltorres1221 racheltorres1221

16-06-2018
Mathematics

contestada

Use formula for permutations to calculate in how many ways you can select 2 people out of 10,

Respuesta :

sqdancefan sqdancefan

16-06-2018

The formula for permutations is
P(n, k) = n!/(n-k)!

For n=10 and k=2 the formula tells you
P(10, 2) = 10!/8! = 10*9 = 90
there are 90 ways to select 2 people from 10 when order matters.

Answer Link

Otras preguntas

1. The perimeter of the given triangle PQR is cm P 7cm 3cm R 4cm O 16 28 26 65

Which best describes the relationship between the line that passes through the points (-9, 2) and (-5, 4) and the line that passes through the points (-3, 4) an

A meeting is held with eight people around a circular table. Two of the participants, April and May, want to sit so that there is exactly one other person betwe

2 moles of oxygen are present in how many moles of h2so4

What is the concentration of a solution when 50.0 mL of 0.436 M NH ₄NO ₃ is diluted to a new volume of 250.0 mL

Given that a function, h, has a domain of -3 ≤ x ≤ 11 and a range of 1 ≤ h(x) ≤ 25 and that h(8) = 19 and h(-2) = 2, select the statement that could be true for

Environmental challenges in the US include all of the following except __________. A. acid rain B. water pollution C. urban heat islands D. rural freeze zones

Which of the following is an even function? (A) g(x)=5x+2 (B) g(x)=x (C) g(x)= x 2 (D) g(x)=x3 (E) g(x)=−|x|

Helpppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppp

building the Suez canal in Egypt is an example of which theme of geography