Number question

Question

Let P stand for the product of the first 5 positive integers. what is the greatest possible value of m if p/10^m is an integer. 

A.0

b.1

c.2

d.3

e.none 

Answer 1

The first 5 positive integers are 1, 2, 3, 4, 5

Their product is 120

 

p = 120

 

For p/10^m to be an integer the greatest possible value of m is 1

 

120/10⁰ = 120

120/10¹ = 12

120/10² = 1.2