Here specific combinatorial testing is requested for the card type cross the card-validity. For an "invalid card type", card validity is irrelevant (so only one test case). The 4 transaction endings are not tested in a combinatorial manner, so covered with the 4 valid card-type test cases. I hope, my thoughts and the table are correct.

Here specific combinatorial testing is requested for the card type cross the card-validity. For an "invalid card type", card validity is irrelevant (so only one test case). The 4 transaction endings are not tested in a combinatorial manner, so covered with the 4 valid card-type test cases. I hope, my thoughts and the table are correct and help.

Here specific combinatorial testing is requested for the card type cross the validity. For an "invalid card type", card validity is irrelevant (so only one testcase). The 4 transaction endings are not tested in a combinatorial manner, so covered with the 4 valid card-type test cases. I hope, my thoughts and the table are correct.

Here specific combinatorial testing is requested for the card type cross the card-validity. For an "invalid card type", card validity is irrelevant (so only one test case). The 4 transaction endings are not tested in a combinatorial manner, so covered with the 4 valid card-type test cases. I hope, my thoughts and the table are correct.