AdenaBulfer AdenaBulfer

03-09-2014
Mathematics

contestada

A teacher is choosing 4 students from a class of 30 to represent the class at a science fair. In how many ways can the teacher choose the students?

Respuesta :

konrad509 konrad509

03-09-2014

[tex]{30 \choose 4}=\frac{30!}{4!26!}=\frac{27\cdot28\cdot29\cdot30}{2\cdot 3\cdot4}=27\cdot7\cdot29\cdot5=27405[/tex]

Answer Link

Otras preguntas

what is 46/12 as a mixed fraction in simplest form

PLEASE HELP ME I AM STUCK PLEASE PLEASE PLEASE

what's the difference between 8 848 and 10 911 meters

Jamie has 3 times as many pencils as pens. She has at least 18 pencils. How many pens does Jamie have?

Two fair six sided dice are thrown. Find the probability that both dice land on 6

What is a analogy for ivy?

The majority of states that did not ratify the Equal Rights Amendment were located in the A. Southeast. B. West. C. Northeast. D. Midwest.

a spider is crawling on a wall. first it crawls 1 meter up, then 1 meter to the left , and then 1 meter down. what is its total displacement?

Round 4,339,908 to the ten thousand

Thelma spent 1/6 of her weekly allowance on dog toys, 1/4 on a dog collar, and 1/3 on dog food. What fraction of her weekly allowance is left?