Question

find the value of 5p2 and 7c3​

Answer 1

Step-by-step explanation:

5p2=5!/(5-2)! [npr=n!/(n-r)!]

=5!/3!

=5.4.3!/3!

=5.4

5p2=20

7c3=7!/3!(7-3)! [nCr=n!/r!(n-r)!]

=7!/3! 4!

=7.6.5/3.2

=35