1100
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The answer is 1100.
Octal and hexadecimal numbers are useful for humans as they compactly represent binary numbers:each octal digit represents exactly 3 binary digitseach hexadecimal number represents exactly 4 binary digitsFor example, instead of trying to read (and remember) the binary number 100111001001 it can be represented as hexadecimal 0x09c9 or octal 04711 which are easier to read (and remember) for humans.
It is simplest to convert each hexadecimal digit into its 4-digit binary equivalent. So: 5 = 0101 A = 1010 3 = 0011 4 = 0100 F = 1111 6 = 0101 So, the binary equivalent is 10110100011010011110101.
15
That looks like hexadecimal. Convert each hex digit to 4 binary digits: B = 1011, 2 = 0010, F = 1111, so the final result is 1011 0010 1111.That looks like hexadecimal. Convert each hex digit to 4 binary digits: B = 1011, 2 = 0010, F = 1111, so the final result is 1011 0010 1111.That looks like hexadecimal. Convert each hex digit to 4 binary digits: B = 1011, 2 = 0010, F = 1111, so the final result is 1011 0010 1111.That looks like hexadecimal. Convert each hex digit to 4 binary digits: B = 1011, 2 = 0010, F = 1111, so the final result is 1011 0010 1111.