${9}$ coloured balls are arranged in a row. Find the number of ways this can be done if all the ba

Question

${9}$ coloured balls are arranged in a row. Find the number of ways this can be done if all the balls are of different colours, there are ${4}$ red balls, ${3}$ green balls and ${2}$ yellow balls, there are ${4}$ red balls, ${3}$ green balls and ${2}$ yellow balls, and the arrangement is symmetrical.

Accepted Answer

(i) $362880$ (ii) $1260$ (iii) $12$

RI Permutation and Combination Tutorial Q1

RI Permutation and Combination Tutorial Q1

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