Logarithms & Binary Numbers · NDA previous year questions

2011 3 questions

1. Q182011 · 21 Aug 2011

   In binary system the decimal number 0.3 can be expressed as

   1. A.$(0.01001\dots {)}_2$
   2. B.$(0.10110\dots {)}_2$
   3. C.$(0.11001\dots {)}_2$
   4. D.$(0.10101\dots {)}_2$
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   Answer: A

2. Q192011 · 17 Apr 2011

   The number 10101111 in binary system is represented in decimal system by which one of the following numbers?

   1. A.157
   2. B.175
   3. C.571
   4. D.751
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   Answer: B

3. Q442011 · 17 Apr 2011

   In the binary system of numbers let $a=00111$ and $b=01110$, then in decimal system what is $b/a$ equal to?

   1. A.1
   2. B.2
   3. C.4
   4. D.5
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   Answer: B