17) What are the two inputs (A and B) of the 'NOR' gate, if the output (Y) = 1 ?

18) In NOR gate, if the output Y = 1, what will be the two inputs ?

19) The equivalent binary number to the decimal number '6' is

20) The decimal number 8 is equal to the binary number

21) In binary numbers, '0100' is equal to the decimal number