WAEC - Computer Studies (2019 - No. 3)
The hexadecimal number 13, expressed as a binary here is?
00010011.
00101100.
0010110.
00100100.
Paliwanag
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
| 2 | 19 |
| 2 | 9 R 1 |
| 2 | 4 R 1 |
| 2 | 2 R 0 |
| 2 | 1 R 0 |
| 2 | 0 R 1 |
19 in decimal = 10011 in base 2
\(\therefore\) 13 in hex = 10011 in base 2