Type the number

Exercise and reference answers

Questions

1. Answer

   4

   Question

   Subsets of a set holding 1 and 2

2. Answer

   8

   Question

   Subsets of a set with three elements

3. Answer

   1

   Question

   Elements in a singleton set

4. Answer

   0

   Question

   Elements in the empty set

5. Answer

   1834

   Question

   Year John Venn was born

6. Answer

   1883

   Question

   Year John Venn died

Instructions

Type the number only.

Explanation