Number of 7 digit numbers in which first four digits are in ascending order and last four digits are in descending order and middle digit is a perfect square, is N, then unit's digit of N.is

The total number of 4 digit numbers in which the digits are in descending order is

The total number of 4 digit numbers in which the digit are in descending order, is

The total number of 4 digit numbers in which the digit are in descending order, is

The number of all four digit numbers with distinct digits is

From 0 to 9, four digited numbers can be formed such that the digits are in ascending order is

The least number of four digits which is a perfect square is :

If m denotes the number of 5 digit numbers if each successive digits are in their descending order of magnitude and n is the corresponding figure, when the digits are in their ascending order of magnitude then (m-n) has the value (

If m denotes the number of 5 digit numbers if each successive digits are in their descending order of magnitude and n is the corresponding figure, when the digits are in their ascending order of magnitude then (m – n) has the value

If m denotes the number of 5 digit numbers if each successive digits are in their descending order of magnitude and n is the corresponding figure,when the digits are in their ascending order of magnitude then (m-n) has the value (