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Question 29Asked in DSSSB TGT Computer Science (Technical), 8 Aug 2021, Shift 2

If (21121)₃ = (C)₄, then what is the value of C?

  1. A(2023)₄
  2. B(3032)₄
  3. C(2112)₄
  4. D(3031)₄
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Correct answer: (D) (3031)₄

Explanation

(21121)₃ = 2×81 + 1×27 + 1×9 + 2×3 + 1 = 205. Converting to base 4: 205 = 3×64 + 0×16 + 3×4 + 1, so the value is (3031)₄.

From DSSSB TGT Computer Science PYQ (Technical), 8 Aug 2021, Shift 2

This is question 29 of DSSSB TGT Computer Science PYQ (Technical), 8 Aug 2021, Shift 2. 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.