Does anyone know all of the possible subsets of a, b, c, and d?

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Does anyone know all of the possible subsets of a, b, c, and d?

Can anyone help me with this problem? It's about sets and sub-sets.

2007-11-18 02:53:13 · 2 answers · asked by obscured 1 in Education & Reference ➔ Homework Help

2 answers

There are 16 of them. I'll list them all for you by
number of elements. Note the pattern.
I'll leave off the braces for now.
0 elements: Φ(empty set)
1 element: a b c d
2 elements: ab ac ad bc bd cd
3 elements: abc abd acd bcd
4 elements: abcd
The total number is 1+4+6+4+1 = 16.
Does 1,4,6,4,1 look familiar to you?

2007-11-18 03:04:09 · answer #1 · answered by steiner1745 7 · 0⤊ 0⤋

idk what subsets are but ill take an eduucated guess
4 ( A, B, C, D
x
4
_________
16?
sorry im not in highschool

2007-11-18 02:58:12 · answer #2 · answered by Anonymous · 0⤊ 1⤋