Question 447955
  <pre><font face = "Tohoma" size = 4 color = "indigo"><b> 
Hi,
How many three-digit numbers can be formed using the digits 1,2,3,4,5,6, and 7 
"if no digit can be repeated in a number"
  7 possible digits in all. Order important
 7P3 =  7*6*5 = 210 ways