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Assume that we have a PL with three infix operators of precedences and associativities as follows: +lowest left-to-right ia middle right-to-left highest!eft-to-right ↑ (a) Give prefix (Polish notation) representations of the following expressions: a. a+b+C b. a*b*c (b) Assuming the same language, give postfix (reverse Polish notation) representations of the four expressions in part (a) above.

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ven That rmidle vight-to left higheet lect to-vigh ab+ 0 .b ay.bt. tedabtctdchost pe ent at ion a) at btc = at bet オ* C嗟 b6 オ C

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