Choose the correct answer that shows the base 10 number 23 in binary form.

Question

perl · Answer

there are algorithms online, but  23 is between two powers of 2 , 
 
  2^5 < 23 <= 2^4

anonymous · Answer

i dont get it @perl

perl · Answer

a binary number is basically powers of 2 

a1 *2^n + a2*2^n-2 + ... an ,   where an is either 0 or 1

mathmath333 · Answer

10=1010
10+10=1010+1010=10100
10+10+3=10111

mathmath333 · Answer

http://www.mathsisfun.com/binary-digits.html

aum · Answer

2 | 23
  ------
2 | 11    R: 1
  ------
2 |  5    R: 1
  ------
2 |  2    R: 1
  ------
2 |  1    R: 0
  ------
     1     R: 1

R is remainder at each stage of division.  Write the remainders in a sequence from the last remainder to the first one:  10111

mathmath333 · Answer

oh thats nice method i forgot

perl · Answer

repeated division , and noting the remainders

perl · Answer

upside down division is a nice touch