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GATE Overflow | Digital Logic | Test 1 | Question: 26

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If we remember in exam(subconscious) then good for us otherwise mathematic calculation(conscious) is always saviour 

NAND

Are they equal (a nand b) nand c  =  a nand (b nand c) ?       //to check associativity

case 1: a=0

LHS=1       RHS=1

case 2: a=1

LHS= b+c’      RHS=bc

As atleast one case fails . Therefore not associative.

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