Method : 2's complement of a number is 1 added to it's 1's complement number.

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1. Find 2's complement of 110

Solution:


Step-1: 1's complement of 110 is obtained by subtracting each digit from 1

	1	1	1
-	1	1	0
	0	0	1

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Step-2: Now add 1 :
001 + 1 = 010

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So 2's complement of 110 is 010

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2. Find 2's complement of 10110

Solution:


Step-1: 1's complement of 10110 is obtained by subtracting each digit from 1

	1	1	1	1	1
-	1	0	1	1	0
	0	1	0	0	1

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Step-2: Now add 1 :
01001 + 1 = 01010

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So 2's complement of 10110 is 01010

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3. Find 2's complement of 11010

Solution:


Step-1: 1's complement of 11010 is obtained by subtracting each digit from 1

	1	1	1	1	1
-	1	1	0	1	0
	0	0	1	0	1

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Step-2: Now add 1 :
00101 + 1 = 00110

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So 2's complement of 11010 is 00110

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4. Find 2's complement of 10100

Solution:


Step-1: 1's complement of 10100 is obtained by subtracting each digit from 1

	1	1	1	1	1
-	1	0	1	0	0
	0	1	0	1	1

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Step-2: Now add 1 :
01011 + 1 = 01100

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So 2's complement of 10100 is 01100

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5. Find 2's complement of 1101110

Solution:


Step-1: 1's complement of 1101110 is obtained by subtracting each digit from 1

	1	1	1	1	1	1	1
-	1	1	0	1	1	1	0
	0	0	1	0	0	0	1

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Step-2: Now add 1 :
0010001 + 1 = 0010010

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So 2's complement of 1101110 is 0010010

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