1) what is 10101010 as denary? a) 170 b) 180 c) 171 d) 168 2) What is 20 as binary? a) 00010111 b) 10000000 c) 10101010 d) 00010100 3) what is 10 as denary? a) 10 b) 5 c) 2 d) 8 4) What is 225 as binary? a) 101000 b) 11100001 c) 00000000 d) 10001010 5) what is 10101000 + 01010111in denary? a) 11111111 b) 11010101 c) 01010111 d) 00001010 6) what is 190 in binary? a) 10000000 b) 01100110 c) 10111110 d) 11110000 7) Convert 112 from decimal to binary a) 111000 b) 1110101 c) 1010000 d) 1110000 8) Convert 25673 from decimal to binary. a) 110010001001011 b) 100010001001001 c) 110010001001001 d) 110010000001001 9) Convert 555 from decimal to binary. a) 1011101011 b) 1000101011 c) 1000111011 d) 1000101000 10) Convert 100 from decimal to binary. a) 1100100 b) 1111100 c) 1000100 d) 1100101

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