To convert the binary number \( 11001_2 \) to base 5, we can follow these steps:
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Convert from Binary (Base 2) to Decimal (Base 10): The binary number \( 11001_2 \) can be converted to decimal using the place values of binary (which are powers of 2):
\[ 1 \times 2^4 + 1 \times 2^3 + 0 \times 2^2 + 0 \times 2^1 + 1 \times 2^0 \] \[ = 1 \times 16 + 1 \times 8 + 0 \times 4 + 0 \times 2 + 1 \times 1 \] \[ = 16 + 8 + 0 + 0 + 1 = 25 \]
So, \( 11001_2 = 25_{10} \).
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Convert from Decimal (Base 10) to Base 5: Now we convert \( 25_{10} \) to base 5 by repeatedly dividing by 5 and noting the remainders.
\[ 25 \div 5 = 5 \quad \text{(remainder 0)} \] \[ 5 \div 5 = 1 \quad \text{(remainder 0)} \] \[ 1 \div 5 = 0 \quad \text{(remainder 1)} \]
Collecting the remainders from bottom to top gives us \( 100_5 \).
Therefore, \( 11001_2 \) is equivalent to \( 100_5 \) in base 5.