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Implicants and prime implicants

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For F(x,y,z)=$\sum (1,3,4,5)$ , what is the number of implicants and prime implicants?

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Implicant : "Any single 1 or any group of 1’s which can be combined together on a map of the function F represents a product term which is called an implicant of F.."

Prime Implicant : "A product term implicant is called a prime implicant if it cannot be combined with another term to eliminate a variable."

If we solve By K -map;

F(x,y,z) =xy' + y'z +x'z

Implicant : 2

Prime Implicant : 3

plz make me correct if i m wrong...

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