Logarithms & Binary Numbers · NDA previous year questions

2015 3 questions

1. Q1172015 · 19 Apr 2015

   The decimal number $(127.25{)}_{10}$, when converted to binary number, takes the form

   1. A.$(1111111.11{)}_2$
   2. B.$(1111110.01{)}_2$
   3. C.$(1110111.11{)}_2$
   4. D.$(1111111.01{)}_2$
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   Answer: D

2. Q1182015 · 19 Apr 2015

   If $(11101011{)}_2$ is converted to decimal system, then the resulting number is

   1. A.235
   2. B.175
   3. C.160
   4. D.126
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   Answer: A

3. Q1192015 · 19 Apr 2015

   If $2p+3q=18$ and $4p^2+4pq-3q^2-36=0$ then what is $(2p+q)$ equal to?

   1. A.6
   2. B.7
   3. C.10
   4. D.20
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   Answer: C