Discussion :: Number Systems and Codes  General Questions (Q.No.3)
3.  Convert the binary number 1011010 to hexadecimal. 

Answer: Option C Explanation: No answer description available for this question.

Neethy N said: (Oct 31, 2010)  
Group 4 bits each from last. It corresponds to 10 that is 'A' in hexadecimal and next four corresponds to '5' 
Rupa said: (Aug 4, 2011)  
How it would be 5A if we convert that into decimal we get 91 and then divide that 91 with 16 then we will get 5 and reminder 11. So in binary 11 means B. So the answer may be 5B. 
Kranthi said: (Apr 13, 2012)  
0101 1010 for converting binary to hexa 5 10 (for 10 value A ) 5A 
Csg said: (Feb 20, 2013)  
0101 1010 for converting binary to hexa. 5 10 (for 10 value A ). 5A. 
S Kumar said: (Aug 9, 2013)  
Converting binary to decimal. 2^6*1+2^5*0+2^4*1+2^3*1+2^2*0+2^1*1+2^0*0=64+0+16+8+0+2+0=90 and so on..converting (90)decimal to hexadecimal. (16)^1*5+(16)^0*10=510. But in hexadecimal A is the code for digit 10. So answer would be 5A. 
Ashish Singh said: (Jan 24, 2014)  
From last RHS group into four then it becomes 5A. 
Asad Mehmood said: (Apr 22, 2014)  
(1011010) = ? = 2^6*1+2^5*0+2^4*1+2^3*1+2^2*0+2^1*1+2^0*0. = 64+0+16+8+0+2. = 90. Now this 90 convert into hexadecimal. = 16/90_510. = 5A. A represent 10. 
Vimal Sharma said: (Oct 12, 2015)  
(1011010) = ? 0 1 0 1 1 0 1 0. 1st four digit 0 1 0 1. = 0*2^3+1*2^2+0*2^1+1*2^0 = 0+4+0+1. = 5 Answer. Last four digit 1 0 1 0. = 1*2^3+0*2^2+1*2^1+0*2^0 = 8+0+2+1. = 11 mtlb ex0 1 2 3 4 5 6 7 8 9 (B). = 11 = B answer. = 5+B. = 5B answer. 
Madhuri said: (Apr 22, 2016)  
Last four digit 1 0 1 0. = 1*2^3 + 0*2^2 + 1*2^1 + 0*2^0 = 8+0+2+1. = 11 mtlb ex0 1 2 3 4 5 6 7 8 9 (B). = 11 = B answer. In the above (0*2^0) is taken as 1 so you got B. The correct is 8+0+2+0 = 10 = A. 
Prabir Dhara said: (Sep 26, 2017)  
For them who do not know it, 0*2^0=0,(not 1). So for last four digit 1010 = 10 means (A)[1*2^3+0*2^2+1*2^1+0*2^0 = 8+0+2+0=10, We know for hexadecimal numbering system is 0,1,2,3,4,5,6,7,8,9,A,B,C,D,E,F,]. 
Srikar said: (Dec 15, 2017)  
Given binary number is 1011010. 0101  1010 5  10 it can be represented as A. 5  A. So, the answer is 5A. 
Steffen Rohit said: (Mar 29, 2018)  
5A is the correct answer. I agree with the given answer. 
Susheela said: (Dec 1, 2020)  
Given (1011010) to the base 10. Let's divide this binary number into four digits from last. i.e; 0101 1010 as there are only 7 numbers in the given binary form we are adding 0 in front just to make it even. We have a rule called 8421. according to that; The binary number 0101= 5 (4+1). The binary number 1010=10 (8+2). Then we get the hexadecimal number as 510 = 5A. Answer= 5A. 
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