Question

How many two digit number can be formed using three non zero as digit

Answer 1

 using three non zero numbers '9,3&2' we can make a two digit number '54'. solution-
 9*3*2=54

Answer 2

Let 3 non-zero digits be----> 5,7 and 9..... Now two digit numbers from these non zero digits are----> 57,79,95,75,97,59.... :-)