Question 84Asked in Bihar STET 2025 Paper II Computer Science, 3 Nov 2025, Shift 2 (2:00 PM)

What is the simplified expression for the Boolean function F(A, B, C, D) = Σ(0, 1, 2, 4, 5,बूलियन फ़ंक्शन F (A, B, C, D) = σ (0, 1, 2, 4, 5, 6, 8, 9, 10, 12, 13, 14) के लिए सरलीकृत

What is the simplified expression for the Boolean function F(A, B, C, D) = Σ(0, 1, 2, 4, 5, 6, 8, 9, 10, 12, 13, 14) using the K-map method?
बूलियन फ़ंक्शन F (A, B, C, D) = σ (0, 1, 2, 4, 5, 6, 8, 9, 10, 12, 13, 14) के लिए सरलीकृत अभिव्यक्ति क्या है। मानचित्र विधि?
  1. AA'B'C'D' + A'B'C'D + A'BC'D + AB'C'D + ABCDa'b'c'd' + a'b'c'd + a'bc'd + ab'c'd + abcd
  2. BA'B'C'D' + A'BC'D + AB'C'D + ABC'D + ABCDa'b'c'd' + a'bc'd + ab'c'd + abc'd + abcd
  3. CA'B'C'D' + A'BC'D + ABC'D + ABCDa'b'c'd' + a'bc'd + abc'd + abcd
  4. DA'B'C'D' + A'BC'D' + A'BCD + ABCDa'b'c'd' + a'bc'd' + a'bcd + abcd
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Correct answer: (A) A'B'C'D' + A'B'C'D + A'BC'D + AB'C'D + ABCDa'b'c'd' + a'b'c'd + a'bc'd + ab'c'd + abcd

Explanation

Note: the answer key gives (A), but the missing minterms are 3, 7, 11 and 15, which are exactly those with C = 1 and D = 1. So F = (CD)' = C' + D', which matches none of the options.नोट: आधिकारिक उत्तर कुंजी (A) देती है, लेकिन छूटे हुए मिनटर्म 3, 7, 11 और 15 हैं, जो ठीक वही हैं जिनमें C = 1 और D = 1 है। इसलिए F = (CD)' = C' + D', जो किसी विकल्प से मेल नहीं खाता।

From Bihar STET 2025 Paper II Computer Science PYQ, 3 Nov 2025, Shift 2 (2:00 PM)

This is question 84 of Bihar STET 2025 Paper II Computer Science PYQ, 3 Nov 2025, Shift 2 (2:00 PM). See all questions of this paper with answers, or attempt the paper as a timed online test to get your score and all-India rank.