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Need help with a math question.?

To express 2010 in base 2, we use exactly 8 ones and 3 zeros. Find the next two integers in base 2 that use the same number of ones and zeros.

2 Answers

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  • kelsey
    Lv 7
    1 decade ago
    Favorite Answer

    I used this site to help

    http://fclass.vaniercollege.qc.ca/web/mathematics/...

    2010 in base 2 is 11111011010

    I entered numbers into the calculator at the above site until I got the next 2 numbers

    2012=11111011100

    2019=11111100011

  • 1 decade ago

    First figure out what 2010 is in binary notation. They tell you there are 11 digits

    remember 2^11= 2048 2^10 = 1024 2^9 =512 2^8 =256 2^7 =128 2^6 =64 ...

    2010 is 2048 which in binary is 100,000,000,000 (12 digits) and the question tells us there are 11 digits

    so

    10 9 8 7 6 5 4 3 2 1 0

    1024 512 256 128 64 32 16 8 4 2 1

    1 1 1 1 1 1 1 1 1 1 1 = 2047 or 2^12-1 = 2048-1

    2047-2010 = 37 = 32+4+1 so 2010 is 11,111,011,010 i,e, remove the 32,4 and 1 digit

    Add 1 to the binary number ....010

    The next 7 numbers are

    11,111,011,011

    11,111,011,100 3 zeros = 2012

    11,111,011,101

    11,111,011,110

    11,111,011,111

    11,111,100,000

    11,111,100,001

    11,111,100,010

    11,111,100,011 3 zeros = 2019

    Checking a)

    11,111,011,111 = 2047-32=2015 = 2010 +5 YES!!!

    Checking b)

    start with low numbers

    1=001

    2=010 We started here so the numbers below are the rest of the sequence

    3=011

    4=100

    5=101

    6=110

    7=111

    then a big jump

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