noriega1270
noriega1270 noriega1270
  • 11-06-2018
  • Mathematics
contestada

Q # 15 please help to solve

Q 15 please help to solve class=

Respuesta :

calculista
calculista calculista
  • 11-06-2018
we know that
the formula for combinations is
nCr=n!/[(n-r)!*r!]
n is the total number of objects
r is the number that you choose to arrange 

in this problem
n=5
r=2
C=5!/[(5-2)!*2!]------> C=5!/[(3)!*2!]-----> C=5*4*3!/[3!*2!]
C=20/2----> C=10 ways

the answer is
10 ways

Answer Link

Otras preguntas

64, -48, 36, -27 which formula can be used to describe the sequence
is it anorexia nervosa, bing-eating disorder, abnormally low body mass index (BMI), abnormally high body mass index (BMI)
i don't how to solve this.
How does Surja’s culture affect the way she approaches Tara’s marriage? Select each correct answer. Since compatibility is important, Surja decides it is imp
Please help with this problem in math
Based on its role as outlined in the US Constitution which function is most commonly carried out by the house of representatives
Arc cd 1\4 of the circumstance of a circle. What is the radian measure of the central angle.
If a 4.0Ω resistor, a 6.0Ω resistor, and an 8.0Ω resistor are connected in parallel across a 12 volt battery, what is the total current of the circuit?
What do you mix with sanitizer to make it stronger?
A slice of piewith a scoop of ice cream has 850 calories. The calories in the pie alone are 100 more than twice the calories in the ice cream alone. How many ca