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The symbolic representation of four logic gates are given below:

The logic symbols for OR, NOT and NAND gates are respectively

The logic symbols for OR, NOT and NAND gates are respectively
A
(i), (iii), (iv)
B
(iii), (iv), (ii)
C
(iv), (i), (iii)
D
(iv), (ii), (i)
Detailed Solution
In the figure, (i) is the AND-shaped symbol (flat input side, rounded output) with a small bubble at the output: NAND gate.
(ii) is a triangle with a single input and a bubble at the output: NOT gate.
(iii) is the AND-shaped symbol without a bubble: AND gate.
(iv) has a curved input side and a pointed output, without a bubble: OR gate.
So OR, NOT and NAND gates are (iv), (ii) and (i) respectively.
(ii) is a triangle with a single input and a bubble at the output: NOT gate.
(iii) is the AND-shaped symbol without a bubble: AND gate.
(iv) has a curved input side and a pointed output, without a bubble: OR gate.
So OR, NOT and NAND gates are (iv), (ii) and (i) respectively.
