Question

The table shows the number of students in a class who play on a school team and/or are members of a school club:






Play on a School Team Do Not Play
on a School Team Total
Club Member 12 ? 15
Not a Club Member 11 10 21
Total 23 13 36



What is the missing number in the table?
3
5
25
27

Answer 1

                                play on team         do not play            total
club member                   12                        ?                        15
not club member              11                     10                        21
total                                  23                     13                        36

the missing number is 3....because when adding horizontally, 12 + 3 = 15...and when added vertically, 3 + 10 = 13