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[Q&; Wait online. ] Senior 2 Mathematics (Hope Cup Simulation Question)
There is only one kind of happiness, do not consider it;

Next, there are two options;

After choosing a welcome, the same independent variable also has two choices, multiplied by 2;

And so on. . . .

In the end, cups, two choices.

Huan (Welcome to Hope Cup)

2*2*2*2*2*2=64