" The number of non-negative integral solutions of "x+y+z<=n" ,where "n in N" is "

If the number of non-negative integral solutions of 3x+y+z<=30 is N.where N is a four-digit integer 'abba,'then the value of b-a is

The number of non negative integral solutions of 3x+y+z=24 is

The number of non negative integral solutions of 3x+y+z=24 is

The number of non negative integral solutions of 3x+y+z=24 is

The number of non negative integral solutions of 3x+y+z=24 is

The number of non negative integral solutions of 3x+y+z=24 is

Find the number of non negative integral solutions of 2x + y + z = 21.

Find the number of non negative integral solutions of x_1 + x_2 + x_3 + 4x_4 = 20

The number of non negative integral solution of x+y+z<=n, where n in N

The number of non- negative integral solutions of the equation x + y + z = 5 is :