Loading....
Coupon Accepted Successfully!

Warm-Up Drill A

Four people—A, B, C, and D—are standing in a line. For each of the following conditions count the number of orderings possible.

Questions
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
 
Test Your Skills Now!
Take a Quiz now
Reviewer Name