1. The problem is to convert binary numbers to hexadecimal numbers. 2. Hexadecimal is base 16, and binary is base 2. 3. Each hexadecimal digit corresponds to exactly 4 binary digits (bits). 4. To convert, group the binary number into groups of 4 bits starting from the right (add leading zeros if necessary). 5. Convert each 4-bit group into its hexadecimal equivalent. Example: Convert binary $101110111$ to hexadecimal. Step 1: Group bits in 4s from the right: $\,0001\,0111\,0111$ (adding leading zeros). Step 2: Convert each group: - $0001_2 = 1_{16}$ - $0111_2 = 7_{16}$ - $0111_2 = 7_{16}$ Step 3: Combine hexadecimal digits: $177_{16}$ So, binary $101110111_2$ converts to hexadecimal $177_{16}$.