How many different number of 4 digits each (without repetition of digits) can be formed with the digits 0,1,2,3,4,5,6 so that the digits in each number are in the
ascending order?

How many different number of 4 digits each (without repetition of digits) can be formed with the digits 0,1,2,3,4,5,6 so that the digits in each number are in the descending order

How many different numbers of 6 digits each (without repetition of digits) can be formed with the digits 0,1,2,3,4,5,6,7,8 so that the digits in each number are in the (i) descending order (ii) ascending order ?

How many different numbers of 5 digits each (without repetition of digits) can be formed with the digits-5, 6, 7, 8,0 so that the numbers are divisible by 4".

How many different numbers of 4 digits can be formed with the digits 1,1,2,2,3,4 ?

How many numbers of 8 digits can be formed with the digits 4,2,2,2,3,3,5,5 so that odd digits are always in odd palces ?

How many different numbers of 4 digits each can be formed with the digits9,9,5,5,,3,3,,4,6.

How many 4 - digit numbers can be formed from the digits 1,1,2,2,3,3,4,5?

Number of 4 digit numbers which are divisible by 4 that can be formed from the digits 1,2,3,4 and 5 is

How many different numbers of 5 significant digits can be formed with the digits 0,2,5,6,7 if repetition is (a) allowed, (b) not allowed?

How many numbers of 5 digits can be formed with the digits 0,2,5,6,7 without taking any of these digits more than once.