NIELIT 2016 MAR Scientist C - Section C: 17
Regular expression $(a \mid b)(a \mid b)$ denotes the set $\{a,b,ab,aa\}$ $\{a,b,ba,bb\}$ $\{a,b\}$ $\{aa,ab,ba,bb\}$
Regular expression $(a \mid b)(a \mid b)$ denotes the set$\{a,b,ab,aa\}$$\{a,b,ba,bb\}$$\{a,b\}$$\{aa,ab,ba,bb\}$