Question

A code has 4bdigits in a specifiec order , the digits are between 0-9.How many different permutations are there if one digit may onlybbe used once ​

Answer 1

Answer:

Arithmetic means the same thing to you and your family and friends and I

Answer 2

Answer: 210

Step-by-step explanine

So there are 4 x 3 x 2 x 1 = 24 possible ways of arranging 4 items. Therefore I divide 5040 / 24 = 210. So there are 210 different combinations of four digits chosen from 0-9 where the digits don't repeat.