ace test series

Question

Which of the following is not REL?

A) L={ <M> | L(M)=⏀,M is a TM}

B) L={ <M> | L(M)≠⏀,M is a TM}

C) L={<M,x> | M halts on x}

D) L={<M,x> | M accepts x}

Comments

mam, C is RE but not Recursive.

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Only A) mam

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oh yes