s is a subset within a universal set, u. if s = {x, y, 4, 9,?}, which could describe u?\no u = {keys on a…

s is a subset within a universal set, u. if s = {x, y, 4, 9,?}, which could describe u?\no u = {keys on a keyboard}\no u = {letters}\no u = {numbers}\no u = {punctuation marks}

s is a subset within a universal set, u. if s = {x, y, 4, 9,?}, which could describe u?\no u = {keys on a keyboard}\no u = {letters}\no u = {numbers}\no u = {punctuation marks}

Answer

Brief Explanations:

The set S contains variables (x, y) and numbers (4, 9). Among the options, the set of numbers can potentially contain these elements. The set of keys on a keyboard, letters, and punctuation marks do not typically include the elements in S.

Answer:

C. U = {numbers}