Total children = 100 Number of children playing cricket = 64 Number of children who like to play football = 53 Number of children who like to play both cricket and football = 20 ∴ Number of children who do not like to play cricket or football = 100 - (64 + 53 - 20) = 100 - 64 - 53 + 20 = 120 - 117 = 3