10011
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19 in binary is... 10011 (16+2+1)
it is itself in a binary form :) but if its in decimal form.. then its binary equivalent will be..(10011100011011) if it is in binry form.. its equivalent will be..(19)
One way is using the Twos (2s) complement; that is you find the binary representation of the positive number of -19, flip all the bits (0s to 1s and 1s to 0s), and finally add 1 to it.The positive bit of -19 is simply 19. It has a binary code of 0001 0011 (8 bits are required for this particular method). Flipping the bits, we get 1110 1100. Adding 1 (or 0000 0001) to our last answer, we get 1110 1101 which would be the binary representation of -19.
A binary operation is one which takes two numbers and combines them into one. +,-,* and / are all binary operations. If you start with 4 numbers and apply one binary opeartion (to two of the numbers) you are left with three. After two binary operations you are left with two numbers and after three binary operations you are left with only one number. You cannot, therefore, carry out the fourth binary operation if you start with four numbers.
easy, 1011. in binary of course. convert 1011 binary to decimal you get 11.