Question

How many different​ two-digit numbers can you form using the digits

5 comma 2 comma 7 comma 3 comma 8 comma 6 comma 1 comma5, 2, 7, 3, 8, 6, 1,
and
44
without​ repetition?

Answer 1

52, 25, 73, 37, 86, 68, 15, 51, 72, 27, 38, 83, 14, 41, 57, 53, 58, 54, 56, 51, 23, 28, 26, 21, 24