If each of 3 digit code is formed of integers from 1 to 40, inclusively, and each of the digits are different, how many possible codes are there?
Choose the correct choice from the following options
A) 54230
B) 59365
C) 59280
D) 25789
E) 57690
Code consists of 3 digits and no digit is repeated.   First digit of the code can have 40 possibilities   Second digit can have 39 possibilities   Third digit can have 38 possibilities   Total number of possible codes = 40*39*38= 
<gadget id="calculator">40*39*38</gadget>
<output>59_280</output>
59280   Answer: 59280
<result>C</result>
If each of 3 digit code is formed of integers from 1 to 40, inclusively, and each of the digits are different, how many possible codes are there?