2n-objects-of-each-of-three-kinds-are-given-to-two-persons-so-that-each-person-gets-3n-objects-Prove-that-this-can-be-done-in-3n-2-3n-1-ways-

Question Number 22036 by Tinkutara last updated on 14/Oct/17

2 n objects of each of three kinds are

given to two persons, so that each

person gets 3 n objects . Prove that

this can be done in 3 n^{2} + 3 n + 1 ways .

Commented by Tinkutara last updated on 14/Oct/17

help pls