NDA Math Mock Test 02 – Question 40

Question:

A binary number is represented by \((cdccddcccddd)_2\), where \(c > d\). What is its decimal equivalent?

एक द्वि-आधारी संख्या \((cdccddcccddd)_2\) द्वारा दर्शाई जाती है, जहाँ \(c > d\) है। इसका दशमलव समतुल्य क्या है?

Options:

  • 2842
  • 1848
  • 2048
  • 2872
  • 2842
  • 1848
  • 2048
  • 2872

Correct Answer: d)

Explanation:

Since \(c > d\) and binary digits can only be 0 and 1, we must have \(c = 1\) and \(d = 0\).
The number is \((101100111000)_2 = 2^{11} + 2^9 + 2^8 + 2^5 + 2^4 + 2^3 = 2048 + 512 + 256 + 32 + 16 + 8 = 2872\).

द्वि-आधारी प्रणाली में अंक केवल 0 और 1 होते हैं, अतः \(c > d\) से \(c = 1\) और \(d = 0\)।
संख्या \((101100111000)_2 = 2048 + 512 + 256 + 32 + 16 + 8 = 2872\) है।

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