Answer:

H = {}

Step-by-step explanation:

Since there is no months starting in letter b, then set H is a null set.

Null set are sets that contains no elements.

Null set is a subset of any set.

It has a cardinality of 0.

If you want more question, just ask me.

Ø is the symbol for a null set. Ø is from the Norwegian and Danish Alphabet.

Actually, tinuro na po sa amin ito so if you want more question, just ask me.

Im a helping hand.