Naval signals are made by arranging coloured flags in a vertical line and the flags are read from to

Question

Naval signals are made by arranging coloured flags in a vertical line and the flags are read from top to bottom. How many different signals can be made from $1$ green, $3$ red and $2$ blue flags if all $6$ of the flags are used, at least $5$ of them are used?

Accepted Answer

(i) $60$ (ii) $120$

Permutation and Combination - Permutations with Identical Objects

Permutation and Combination - Permutations with Identical Objects

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