Question

Postal Index Number consists of six digits The first three digits are 6, 3 and 1. Make the largest and the smallest Postal Index Number by using the digits 0, 3 and 6 each only once.

Answer 1

Given PIN consists of six digits. First, three digits are 6, 3, and 1. 

The digits 0, 3 and 6 to be used only once, in the remaining places.

	L	T TH	TH	H	T	O
Largest No.	6	3	1	6	3	0
Smallest No.	6	3	1	0	3	6

Largest Postal Index Number: 631630 

Smallest Postal Index Number: 631036