Question

Step 1

(a) The shop has 7 types of croissants.

So *n *= 7. To choose one dozen croissants, so *r* = 12.

Repetition of croissants are allowed.

Thus the number of ways are

Step 2

(b) The shop has 7 types of croissants.

So *n *= 7. To choose two dozen croissants, so *r* = 24.

Repetition of croissants are allowed.

Thus the number of ways are

Step 3

(c) The shop has 7 types of croissants.

So *n *= 7.

First select 1 of each kind, which are 7 croissants in total. Still need to select the re...

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