Mcqs Clouds

A discrete time signal may be

1) Samples of a continuous signal
2) A time series which is a domain of integers
3) Time series of sequence of quantities
4) Amplitude modulated wave

A. 1, 2 and 3 are correct

B. 1 and 2 are correct

C. 1 and 3 are correct

D. All the four are correct

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