# Computer Science - Computer Fundamentals - Discussion

7.

Which of the following is the 1's complement of 10?

 [A]. 01 [B]. 110 [C]. 11 [D]. 10 [E]. None of the above

Explanation:

No answer description available for this question.

 Soumya said: (Apr 1, 2011) IN ONE'S COMPLEMENT EVERY ZEROS ARE REPLACED BY 1 AND VICE VERSA EXAMPLE: 100 ANSWER: 011 IN THIS EXAMPLE 1 IS REPLACED BY 0 AND 0 IS REPLACED BY 1

 Sudha said: (May 4, 2011) Thnks for the Explanation and its v short and cute :)

 Sathiya said: (Sep 6, 2011) In One's complement replace the opposite value in the given number. To allow only 0 or 1 only. if 0 means to replace 1 and 1 means to replace 0.... Example the 1's complement of 1010 Ans: 0101

 Vivek Patel said: (Sep 19, 2011) 1's complement of 10 is 01

 Deepak said: (Oct 19, 2011) Simple rule for complements is that : Replace 1 by 0 and 0 by 1. Eg: 1's complement of 1001 will be 0110.

 Simi said: (Nov 8, 2011) Rules for 1s complement is that replacing 1 by 0 and 0 by 1, or another method is that subtracting number to be complemented by 11, genarally number of ones is taken depends on the number of digits in the paritular number.

 Raghupathi said: (Nov 29, 2011) It is very easy to write 1s' compliment write 1 where it is 0 and VICE VERSA.

 Bibhuprasad Sahoo said: (Feb 15, 2012) In one's complements of a binary number, the easiest method is just replace 1 by 0 and 0 by 1. Thats all.

 Basant Rajak said: (Feb 23, 2012) In one's complement method simply 1 is replaced by 0 and 0 is replaced by 1 thats all.

 Jagadish said: (Jun 18, 2012) In computer terminology complement means 0 replace 1 and 1 replace 0.

 Ravi Yadav said: (Jun 19, 2012) For 1's complement we change 1=0 and 0=1. And for 2's complement we add 1 in 1's complement.

 Sanoop Kumar said: (Jul 10, 2012) Its simple, In one's complement method 1 is replaced by 0 and 0 is replaced by 1, Example : 1010. Answer : 0101.

 J.Rupa said: (Aug 30, 2012) In 1's complement 0 is replaced by 1 and 1 is replaced by 0. So the answer for 10 is 01.

 Manoj said: (Sep 8, 2012) In 1's complement 0 is replaced by 1 and 1 is replaced by 0.

 Moin Pathan said: (Mar 11, 2013) In 1's complement every 1's are replaced by 0's and every 0's are replaced by 1's. :-).

 Mangesh S. Gaikwad said: (Apr 17, 2013) It is very easy to write 1's complement. Rule for complements is that:1 is replace by 0 & 0 is replace by 1. For EX.: 101010 Answer: 010101

 Arunima said: (Jul 28, 2013) How can one be sure that the number 10 is a decimal or a binary?

 Urvashi said: (Jan 14, 2014) I agree with @Arunima. I would have marked none of these since I took it to be decimal 10.

 Shivam Gupta said: (Feb 24, 2014) 1's comp work with on and off so the 0 change will be 1 and 1 will be change in 0.

 Vanmathi said: (May 27, 2014) Explain the 2's complement and example? different b/w the 1's and 2's complement?

 Riya said: (Sep 14, 2014) Yes it is a very easiest way to remember for all that the replacement of 1 by O & viceversa.

 Pooja Sharma said: (Oct 6, 2014) 0 complement 1 and 1 complement 0 always.

 Richa said: (Nov 8, 2014) Please explain how option A is correct?

 Suma said: (Jan 22, 2015) 1's coplement of 10 is 01.

 Mothukuri Siva Krishna said: (Feb 2, 2015) Reversing Digits with compliments 0-1 and 1-0 for binary numbers.

 Bharat said: (Feb 14, 2015) First Complement of : 10 is 01, 110 is 001, 000 is 111. ----Binary to Decimal Convert------------- 128 64 32 16 4 2 1 Decimal. 0 0 0 0 0 1 0 = 2. 0 0 0 0 1 1 0 = 4+2 = 6. Thanks.

 Sarfraz said: (Apr 12, 2015) For obtained the first complement two steps are required. 1. Replace 0 to 1. 2. Replace 1 to 0. E.g 100 to 011.

 V.Viswanath said: (Jun 8, 2015) Complement is a very easy 1 replaced by 0, 0 replaced by the 1.

 K.Jyothi said: (Jun 25, 2015) We can replace 0 as 1 and 1 as 0.

 Sanjay said: (Jul 22, 2015) What would be result if we say 0's complement?

 B.Abraaham said: (Jul 25, 2015) Very good explanation.

 Irfan said: (Sep 7, 2015) Where we use this ones and zero's complement? Please explain.

 Arnav said: (Oct 22, 2015) Simply add 1 to the code.

 Karri Jagapathibabu said: (Mar 12, 2016) Example of 2nd complement.

 Hari said: (Mar 20, 2016) Like DNA complement 0 is complement to 1, 1 to 0 ?

 Sabari said: (Jul 8, 2016) I initially think that it's 10 in number. It's a binary number so answer carefully .

 Akhil said: (Aug 3, 2016) Very simple, and the answer is 01.

 Minahajhusen Mansuri said: (Aug 17, 2016) In One's complement replace the opposite value in the given number. To allow only 0 or 1 only. If 0 means to replace 1 and 1 means to replace 0. 10 binary is 110. So 1's complement is 001.

 Benjo said: (Oct 13, 2016) 0 = 1 & 1 = 0.

 Ashok Arya said: (Oct 25, 2016) 1's Complement of 5 is = ? Please derive the solution.

 Annonymous said: (Nov 30, 2016) @Ashok. In binary representation 5 is 101. So, complementing the bits we have 010 i.e. 2.

 Chris said: (Jun 7, 2017) It is very helpful, Thanks for the given explanation.

 Sajal said: (Jun 30, 2017) Where is the need of 1's, 9's, 10's complement? I mean I didn't understand the concept of complements .Please, explain.

 Anuj said: (Jan 18, 2018) Just change the 1 with 0 and 0 with 1. 1-->0 0-->1 So, 10-->01.

 Nayana said: (Jul 21, 2018) 1's complement : It is obtained by changing all 1's to 0's and al 0's to 1's. Example : 0110. It's 1's complement is 1001.

 Gopal said: (Feb 1, 2019) Let me know about 2's complement in easy method. Please, anyone help me.

 Sachin said: (Mar 21, 2019) @Gopal. For 2's complement, we first find 1's complement and then add 1 in that number. Eg: We have a binary number 0111, 2's complement = [1's complememt] + 1 . 1's complement = 1000, now add 1, 1000 + 1 =========== 1001 ===========