How many positive integers less than 600 can be formed using the numbers 1, 2, 3, 5 and 6 for the digits?	Choose the correct choice from the following options:
A) 48  B) 130  C) 66  D) 68  E) 84
Notice that we can find the number of 2 and 3 digit numbers by just assuming the first digit can also be zero:   0 1 1   1 2 2   2 3 3   3 5 5   5 6 6   Number of possibilities = 5*5*5= 
<gadget id="calculator">5*5*5</gadget>
<output>125</output>
125.   Then, just add up the number of 1 digits numbers= 5, so total is  125+5= 
<gadget id="calculator"> 125+5</gadget>
<output>130</output>
130.   Answer: 130
<result>B</result>
How many positive integers less than 600 can be formed using the numbers 1, 2, 3, 5 and 6 for the digits?