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Which of the following is an infix expression?

(a) (a+b)*(c+d)

(b) ab+c*

(c) +ab

(d) abc+*

The above asked question is from Application of Stacks in section Application of Stacks of Data Structures & Algorithms I

I had been asked this question by my school principal while I was bunking the class.

1 Answer

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Correct answer is (a) (a+b)*(c+d)

Best explanation: (a+b)*(c+d) is an infix expression. +ab is a prefix expression and ab+c* is a postfix expression.

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