Associative

Question

In the following grammar
\[
\begin{array}{l}
\mathrm{P} \rightarrow \mathrm{P} \uparrow \mathrm{Q} \mid \mathrm{Q} \\
\mathrm{Q} \rightarrow \mathrm{R} \& \mathrm{~S} \mid \mathrm{S} \\
\mathrm{~S} \rightarrow \mathrm{id}
\end{array}
\]

Which of the following is true?

• A. $\uparrow$ is left associative while $\&$ is right associative
  
• B. $\uparrow$ is right associative while $\&$ is left associative
  
• C. both $\uparrow \& \&$ are left associative
  
• D. none of the above

Answer 1

A---> A∗B i.e. * is Left associative
A--->B*A  i.e. * is Right associative

P is Left associative . Associativity of Q is Not Defined.

Answer 2

Answer is D.