There are 3 Indians and 3 Chinese in a group of 6 people. How many subgroups of this group can we choose so that every subgroup has at least one Indian?
There are 3 Indians and 3 Chinese in a group of 6 people. How many subgroups of this group can we choose so that every subgroup has at least one Indian? Correct Answer 56
Case 1 ( 1 Indian)
The possible subgroups can be
1 Indian with 0 Chinese
1 Indian with 1 Chinese
1 Indian with 2 Chinese
1 Indian with 3 Chinese
Sum of case 1 Possible cases :
Case 2 ( 2 Indians)
The possible subgroups can be
2 Indian with 0 Chinese
2 Indian with 1 Chinese
2 Indian with 2 Chinese
2 Indian with 3 Chinese
Sum of case 2 Possible cases :
Case 3 ( 3 Indians)
The possible subgroups can be
3 Indian with 0 Chinese
3 Indian with 1 Chinese
3 Indian with 2 Chinese
3 Indian with 3 Chinese
Sum of case 2 Possible cases :
Total cases :
24 + 24 + 8 = 56
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Feb 20, 2025