577 views

Choose the correct alternatives (more than one may be correct) and write the corresponding letters only:

The operation which is commutative but not associative is:

1. AND
2. OR
3. EX-OR
4. NAND
edited | 577 views
+2
'communicative' should be 'commutative'

$Remark:$
1) Every logic gate follows Commutative law.
2) AND, OR, Ex-OR, EX-NOR follows Associative law also. NAND, NOR doesnt follow Associative law.
edited
+12
Its good to remember-
1)Every logic gate follows Commutative law.
2)AND,OR,Ex-OR,EX-NOR follows Associative law also. NAND,NOR doesnt follow Associative law.
+1

commutative law: A operator B = B operator

associative law: A operator (B operator C) = (A operator B) operator C

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EX-NOR is associative...
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Every logic gate follows Commutative law. how?
A->B is not same as B->A, right?
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@chauhansunil20th

The implication is a logic Gate??

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@akash.dinkar12 why not? why even this doubt?

Ans is D you can varify it like  ((AB)'C)' = (A(BC)')' are not equivalent for input 011.
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# yes option D

We get for inputs 001,011,100 and 110 both the NAND  and NOR are not associative

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