The words that can be made from the letters in hello are:
An element doesn't have subsets. Sets can have subsets.
If you include the empty set (as you should) there are 48.
8 subsets
Only a set can have subsets, a number cannot have subsets.
The word "hello" has four phonemes: /h/ /e/ /l/ /o/.
You can make:ellelkhellheyhihikehilthithokeyholeholyhotilkillitkeykillkilokiltkitkiteletlielikelitlithelotlyeohoiltelltietiletilltilttithetoetolltottoyyellyetyokeyolk And, hello and kitty.
5 subsets of 4 and of 1, 10 subsets of 3 and of 2 adds up to 30.
two
That means, figure out how many different subsets a set has. In general, if a set has n elements, it has 2n different subsets.
If the universal set contains N elements then it has 2N subsets.
Two. The set {x} has the subsets {} and {x}.
512 subsets