11 2-19.   Convert 33.34₁₀  to base 2 (four places). 1. 11110.1010₂ 2. 100001.1010₂ 3. 100001.0101₂ 4. 100010.1011₂ IN ANSWERING QUESTIONS 2-20 THROUGH 2-22, USE THE DIVISION METHOD TO CONVERT DECIMAL NUMBERS TO OCTAL. 2-20. 193₁₀ 1. 62₈ 2. 142₈ 3. 301₈ 4. 403₈ 2-21. 746₁₀ 1. 1352₈ 2. 2531₈ 3. 1476₈ 4. 2312₈ 2-22. 3007₁₀ 1. 5000₈ 2. 5677₈ 3. 4771₈ 4. 4115₈ IN ANSWERING QUESTIONS 2-23 THROUGH 2-25, PERFORM THE INDICATED OPERATION. 2-23.   Convert 0.305₁₀  to octal (four places). 1. 0.5765₈ 2. 0.1471₈ 3. 0.3050₈ 4. 0.2341₈ 2-24.   Convert 78.9₁₀  to octal (three places). 1. 100.417₈ 2. 103.714₈ 3. 116.714₈ 4. 116.147₈ 2-25.   Convert 506.66₁₀  to octal (four places). 1. 677.5063₈ 2. 521.4401₈ 3. 653.3774₈ 4. 772.5217₈ 2-26.   What is the hex equivalent of 45₁₀? 1. 1F₁₆ 2. 24₁₆ 3. 2A₁₆ 4. 2D₁₆ 2-27.   What is the hex equivalent of 255₁₀? 1. AE₁₆ 2. BC₁₆ 3. CG₁₆ 4. FF₁₆ IN ANSWERING QUESTIONS 2-28 THROUGH 2-30, PERFORM THE INDICATED OPERATION. 2-28.   Convert 1609₁₀  to hex. 1. 5A5₁₆ 2. 649₁₆ 3. C41₁₆ 4. A95₁₆ 2-29.   Convert 0.84 to hex (three places). 1. 0.D70₁₆ 2. 0.1F3₁₆ 3. 0.AAC₁₆ 4. 0.C3E₁₆ 2-30.   Convert 0.109₁₀  to hex (four places). 1. 0.1114₁₆ 2. 0.101F₁₆ 3. 0.1BE7₁₆ 4. 0.09D4₁₆