The number of cards is 3. the number of orders in which the cards can be lined up is 3!
3! = 3 * 2 * 1 = 6
6 different orders
Assuming the cards are A, B and C. The orders are ABC, ACB, BCA, CBA, CAB, BAC. That is 6 different orders rent orders
1.6m questions
2.0m answers