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Question

What is the first order predecate calculus statement equivalent to the following ? Every teacher is likes by some student

A
(x)[teacher(x)(y)[student(y)likes(y,x)]]
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B
(x)[teacher(x)(y)[student(y)likes(y,x)]]
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C
(y)(x)[teacher(x)(y)[student(y)likes(y,x)]]
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D
(x)[teacher(x)(y)[student(y)likes(y,x)]]
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Solution

The correct option is B (x)[teacher(x)(y)[student(y)likes(y,x)]]
Every teacher is liked by some student : then the logical expression is(x)[teacher(x)(y)[student(y)likes(y,x)]]
Where likes (y, x) means y likes x, such that y represent the student and x represents the teacher.

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