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| 1. |
If set p has 3 elements, Q four and R two then the PxQxR contains |
| Answer» ND B are TWO sets with number of elements p and q respectively. The cartesian product of A and B=A×B={(a,b):(a∈A) and (b∈B)} Number of elements in A×B=∣A×B∣=∣A∣.∣B∣=PQ Any relation from A to B is a subset of A×B. HENCE number of relations from A to B is the number of subsets of A×B =2 ∣A×B∣ =2 pq | |