Method : 1's complement of a number is obtained by subtracting each digit from 1.

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1. Find 1'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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So 1's complement of 110 is 001

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2. Find 1'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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So 1's complement of 10110 is 01001

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3. Find 1'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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So 1's complement of 11010 is 00101

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4. Find 1'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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So 1's complement of 10100 is 01011

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5. Find 1'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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So 1's complement of 1101110 is 0010001

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