How many 3 digit positive integers with distinct digits are there, which are not multiples of 10?
Choose the correct choice:	A) 576	B) 520	C) 504	D) 432	E) 348
A number not to be a multiple of 10 should not have the units digit of 0.   XXX   9 options for the first digit (from 1 to 9 inclusive).   8 options for the third digit (from 1 to 9 inclusive minus the one we used for the first digit).   8 options for the second digit (from 0 to 9 inclusive minus 2 digits we used for the first and the third digits)   9*8*8= 
<gadget id="calculator">9*8*8</gadget>
<output>576</output>
576.   576nswer: 576.
<result>A</result>
How many 3 digit positive integers with distinct digits are there, which are not multiples of 10?