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Q28.Truth table for system of four NAND gates as shown in figure is (1) (2) (3) (4)

What This Question Tests

This problem tests the ability to analyze a combination of NAND gates and derive the equivalent truth table by progressively determining the output of each gate.

Concepts Tested

NAND gate operationBoolean algebraTruth tables

Formulas Used

Y = NOT (A AND B)

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