How many subsets of the set 1,2,3,4,5,6,7,8,9,10 contain the number 5?

doorknoob May 12, 2019

#1**+4 **

This problem was answered before

There are 2^10 different subsets in the original set.

Now let us just subtract subsets without a 5

Let us just pretend you have set without a 5

So {1 2 3 4 6 7 8 9 10} Is your new set

So how many subsets can you make from that?

2^9 subsets

2^10 - 2^9 = 512 different subsets

NOTE: 2^10 - 2^9 is NOT 2.

So there you have it! :D:D:D

CalculatorUser May 12, 2019