How many 3 digit odd numbers do not use any digit more than once
Choose the correct answer
A) 1720  B) 216  C) 224  D) 2460  E) 280
The Way i solved it is   A B C ( hundreds, tens, units   )C can be 1 3 5 7 9 ( any of the 5 digits )   A can be anything except (D or 0) so 8 possibilitie   B can be anything execpt ( A D C ) so 7 possibilities   total ways are   7 * 8 * 5= 
<gadget id="calculator">  7 * 8 * 5</gadget>
<output>280</output>
280   Ans : 280
<result>E</result>
How many 3 digit odd numbers do not use any digit more than once