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

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

Idrk but i think u should figure out the n dia n then the units it will make it way more easier