How many five digit numbers can be formed using the digits {1, 3, 4, 5, 7,9}(repetition of digits is not allowed)?
Choose the correct choice:
A) 360
B) 720
C) 278
D) 279
E) 274
The given digits are six.   The number of four digit numbers that can be formed using six digits is   6P5 = 6 * 5 * 4 * 3 * 2= 
<gadget id="calculator">6 * 5 * 4 * 3 * 2</gadget>
<output>720</output>
720.   Answer: 720
<result>B</result>
How many five digit numbers can be formed using the digits {1, 3, 4, 5, 7,9}(repetition of digits is not allowed)?