Question

Yolanda has 3 each of red, blue, green marbles. How many possible ways can 9 marbles be arranged in a row

Answer 1

Possible ways can 9 marbles be arranged in a row = 1680

Explanation:

The number of different permutations of n objects where one object repeats a times, a second object repeats b times, and so on is
`(n!)/(a!*b!*.....)`

Here n = 9, a = 3, b =3, c = 3

Number of permutations =
`(9!)/(3!*3!*3!)=(362880)/(6*6*6) =1680ways`