Question

Use Pascal’s triangle to find the number of ways to choose 4 boxes from 6 boxes.
a.
20
c.
15
b.
5
d.
none of these

Answer 1

http://www.mathsisfun.com/pascals-triangle.html found in the penultimate row highlighted in blue

Answer 2

C.15
solution c(6,4)=6!/4!*2!=15

Answer 3

@neba.zi correct, but he is supposed to find it using pascal's triangle