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.

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

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

Find the number of non-negative integral solutions of x+y+z+wlt=20.

Find the number of non-negative integral solutions of x+y+z+wlt=20.

Find the number of non-negative integral solutions of x+y+z+wlt=20.

Find the number of non-negative integral solutions of x+y+z+w<=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 x+y+z<=n, where n in N is