The number of ways in which 12 identical things can go into 5 purses such that no purse being empty is

For the equation X+Y+Z+W = 19, the number of positive integral solutions is equal to (A) The number of ways in which 19 identical things can be distributed among 4 persons so that each gets atleast one thing (B) The number of ways in which 15 identical things can be distrusted to 4 persons so that each person get any number of things. (C) 18C_3 (D) 22C_3

The number of ways in which 16 identical things can be distributed among 4 persons if each person gets atleast 3 things,is k then k/7 is

If number of ways in which 7 identical balls can be distributed into 4 boxes, so that no box remains empty is 4lamda , the value of lamda is

If number of ways in which 7 identical balls can be distributed into 4 boxes, so that no box remains empty is 4lamda , the value of lamda is

If number of ways in which 7 identical balls can be distributed into 4 boxes, so that no box remains empty is 4lamda , the value of lamda is

If number of ways in which 7 identical balls can be distributed into 4 boxes, so that no box remains empty is 4lamda , the value of lamda is

If number of ways in which 7 identical balls can be distributed into 4 boxes, so that no box remains empty is 4lamda , the value of lamda is

The number ofways in which we can put n distinct things in two identical boxes so that no box is empty,is 2^(n)-2

Number of ways in which 12 different things can be distributed in 3 groups, is