The GATE Grind

GATE 2021 CS – Question 16

Digital Logic · Number Representation and Arithmetic · 1 mark · Multiple choice

Let the representation of a number in base 3 be 210. What is the hexadecimal representation of the number?

  1. 15
  2. 21
  3. D2
  4. 528

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Correct answer: (A) 15

Explanation

$210_3 = 2\cdot9 + 1\cdot3 + 0 = 21$ in decimal, which is $15_{16}$.