Answer:
The correct options are (2, 3 and 6).
Step-by-step explanation:
It is provided that Daniel has a rock collection of 18 rocks.
He wants to organize these 8 rocks into equal groups.
The factors of 18 are:
Factor (18): {1, 2, 3, 6, 9, 18}
A group is a selection of more than 1 items. So, there cannot be 18 groups.
And there cannot be 1 group, since then Daniel would not be organizing the rocks.
So, the possible ways Daniel line up his rock collection are {2, 3, 6 and 9}.
Thus, the correct options are (2, 3 and 6).
