Question

A medical researcher needs 6 people to test

Answer 1

$\boldsymbol{\mathbf{Answer}}$

$\boldsymbol{\mathbf{1235520\,different\, ways\,can\,six\, people\,be\, selected}}$

$\boldsymbol{\mathbf{Step-by-step explanation}}$

A medical researcher need to select 6 people out of 13 people who have volunteered for the test in

To find, how many ways can 6 people be selected.

= ${13}\times{12}\times{11}\times{10}\times{9}\times{8}$

=

$\boldsymbol{\mathbf{= 604800 ways}}$

$\boldsymbol{\mathbf{1235520\,different\, ways\,can\,six\, people\,be\, selected}}$