# Electronics and Communication Engineering - Digital Electronics - Discussion

4.

Decimal number 10 is equal to binary number

 [A]. 1110 [B]. 1010 [C]. 1001 [D]. 1000

Explanation:

1010 = 8 + 2 = 10 in decimal.

 Pankaj Kumar Seth said: (May 4, 2014) Hexadecimal code is also called 8-4-2-1 code. So that 10 is addition of 8 & 2 so this place value only high. So answer is 1010. Similarly for any other value like 13 so that addition on 8 & 4& 1 is 13 so this place value is high so answer is 1101.

 Sangee said: (Jul 17, 2014) 0 0 0 0=0 0 0 0 1=1 0 0 1 0=2 0 0 1 1=3 0 1 0 0=4 0 1 0 1=5 0 1 1 0=6 0 1 1 1=7 1 0 0 0=8 1 0 0 1=9 1 0 1 0=10 1 0 1 1=11 1 1 0 0=12 1 1 0 1=13 1 1 1 0=14 1 1 1 1=15

 Tejaswini said: (Jul 28, 2014) Also 8+2 = 10,1000+0010 = 1010. Similarly 8+5 = 13, So, 1000+0101 = 1101.

 Ut Rava said: (Dec 8, 2014) 10/2 = 5, cry = 0. 5/2 = 2, cry = 1. 2/2 = 1, cry = 0. So answer is 1010.

 Nilesh Surse said: (Oct 21, 2015) Also 9+5 = 14, 1001+0101. Similarly 9+9 = 18. So, 1001 = 1001.

 Anusha Byravaram. said: (Aug 25, 2017) Use the code: 8421 We can write 10 as 8+2 from these numbers. So,put 1 in the places of 8 and 2 and 0's in the places of remaining. now it becomes,1010. I.e., option (b). It is the final answer.