(11001011)2 = (313)8Explanation:Step by step solutionStep by step solutionStep 1: Write down the binary number, (011001011)2Step by step solutionStep 1: Write down the binary number, (011001011)2Group all the digits in sets of three STARTING from the LSB (FAR right). Add zeros to the left of the last digit if there aren't enough digits to make a set of three.Step by step solutionStep 1: Write down the binary number, (011001011)2Group all the digits in sets of three starting from the LSB (far right). Add zeros to the left of the last digit if there aren't enough digits to make a set of three.011 001 011Step 2: Use the table below to CONVERT each set of three into an octal digit. In this case,Step 2: Use the table below to convert each set of three into an octal digit. In this case,011=3, 001=1, 011=3.Step 2: Use the table below to convert each set of three into an octal digit. In this case,011=3, 001=1, 011=3.So, the number 11001011 in binary is equivalent to 313 in octal.Step 2: Use the table below to convert each set of three into an octal digit. In this case,011=3, 001=1, 011=3.So, the number 11001011 in binary is equivalent to 313 in octal.To convert from binary to octal use the following table:Step 2: Use the table below to convert each set of three into an octal digit. In this case,011=3, 001=1, 011=3.So, the number 11001011 in binary is equivalent to 313 in octal.To convert from binary to octal use the following table:Bin: 000 001 010 011 100 101 110 111Step 2: Use the table below to convert each set of three into an octal digit. In this case,011=3, 001=1, 011=3.So, the number 11001011 in binary is equivalent to 313 in octal.To convert from binary to octal use the following table. (The table is given in the picture attached )So The correct ans will be (313)8Hope it helped U !!!Pls mark my ANSWERS AS BRAINLIEST IF CORRECT....