Since total number of digits =6
So to get a number of a number of the form pq we will have to choose two numbers out of the 6 numbers.
There is only one way to arrange them since the number x has to satisfy 0 Hence no. x=(62)×1=15, but some numbers have to be removed because they are repeated.
They are :
24=1246=2326=1336=12
Thus the number of removed numbers=4
Therefore, total no. of distinct x=15−4=11
Hence, option 'D' is correct.