If the number of relations from A to B is 128 and n ( B) = 7, - Applied Mathematics - Relations

Question

If the number of relations from??A?to??B?is 128 and??n?(?B) = 7,
then what is the value of??n?(?A)?

Abhishek Kumar · Accepted Answer

If the number of relations from??A?to??B?is 128 and??n?(?B) = 7, then what is the value of??n?(?A)?