1) What is denary a) number system of 0-9 b) Letter system c) number system with only 0 and 1 2) What base do we count in a) base 1 b) base 2 c) base 10 3) What numbers represent binary a) 0 and 2 b) 0 and 1 c) 1 and 2 4) Why do computers use binary a) because they are quicker b) because they can only store on and off c) because it's is complex digital mapping 5) What are the place values in binary? a) 1, 2 ,4 ,8,16,24,48,64,128 b) 1,2,4,8,16,32,64,128 c) 0, 2,4,8,12,32,64,128 6) What is 1010 in denary ? a) 10 b) 13 c) 4 d) 472 7) What base is binary in a) base 1 b) base 2 c) base 0 8) What do computers store data in? a) Binary b) Hexadecimal c) Denary 9) What is the best description of binary? a) System that uses 0 and 1 to represent data b) Way to show data in real life c) Uses 0-9 to represent data 10) what is 16 in binary a) 1000 b) 10000 c) 100 d) 101100 11) If 1 and 0 means on and off, what does the number 1 mean a) Off b) On 12) what is 1101 in denary a) 12 b) 3 c) 14 d) 13 13) What is a bit a) Numerical system made from 16 numbers b) Keyboard system c) Smallest unit of data 14) 1111 in denary a) 11 b) 14 c) 15 d) 20 15) A byte is made up of how many binary digits a) 8 b) 6 c) 2 d) 12 16) What kind of data does computers represent with binary a) Numbers b) Pictures c) Letters d) All of the above 17) What is 1111 converted into denary a) 16 b) 13 c) 15 d) 5

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