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Answer: Option A
:
A
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:
A
Output of first NAND gate is, Y′=¯¯¯¯¯¯¯¯¯¯¯A.B
Output of second NAND gate is,
Y=¯¯¯¯Y′=¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯A.B=A.B
Thus AND gate is formed.
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