11.
A 4-line-to-1-line multiplexer shown in figure-I (the same as per IEEE convention is shown in figure-II) is fed with three logic inputs A, B and C as shown. The output of the multiplexer will be
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15.
The Boolean equation $${\text{X}} = \left[ {\left( {{\text{A}} + \overline {\text{B}} } \right)\left( {{\text{B}} + {\text{C}}} \right)} \right]{\text{B}}$$      can be simplified to

17.
The Boolean functions can be expressed in canonical SOP (sum of products) and POS (Product of sums) form. For the function, $${\text{Y}} = {\text{A}} + \overline {\text{B}} {\text{C,}}$$   which are such two forms

20.
The outputs Q and $$\overline {\text{Q}} $$ of master slave S-R flip-flop are connected to its R and S inputs respectively. The output Q when clock pulses are applied will be

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