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WAEC Computer Studies 2019 Paper

Question : 3

Total: 50

The hexadecimal number 13, expressed as a binary here is?

Solution:

first, convert 13 in hex to decimal

$13_{16}$ = $1 \times 16^1 + 3 \times 16^0$ = $19_{10}$

next, change 19 in decimal to binary

19 in decimal = 10011 in base 2

$\therefore$ 13 in hex = 10011 in base 2

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