The smallest 5 digit number formed by using the digits 0, 2, 1, 5, 7 only once, contains _________.
0 in thousands place
Smallest 5 digit number formed by using the digits 0, 2, 1, 5, 7 only once is 10257.
10257 has:
1 in ten thousands place
0 in thousands place
2 in hundreds place
5 in tens place
7 in ones place
So, option ‘d’ is correct.