Page 19 - 3_Dinda Erliananda_Counting Principles

Dinda Erliananda Teaching Materials – SMA Class XII – Enumeration Rules

Alternative 2:

Stage 1. Choose 4 of 7, then C(7, 4) = 35.
Stage 2.Choose 2 of the 3 remaining stages 1, then C(3, 2) = 3.

Stage 3.Choose 1 from 1, then C(1, 1) = 1

So, number of ways to divide = C(7, 4)·C(3, 2) ·C(1, 1)
= 35·3·1

= 105 ways

LET’S WORK AGAIN!

Click this link then answer the problem. Good luck!
https://forms.gle/vySGFJD94NZWrDfU6

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