1. 13	is equal to
   48

1. 1. 

   
   
   

   2. 

   
   
   

   3. 

   
   
   

   4. 

   
   
   

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1. View Hint View Answer Discuss in Forum

   Check through options
   
   

   = 1 +		1
   	3 +	1
   		(9 + 4/9)

   
   

   =	1
   	3 +	9
   		13

   
   

   =	1
   	39 + 9
   	13

   
   

   =	13
   	48

   Correct Option: D

   Check through options
   
   

   = 1 +		1
   	3 +	1
   		(9 + 4/9)

   
   

   =	1
   	3 +	9
   		13

   
   

   =	1
   	39 + 9
   	13

   
   

   =	13
   	48

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2. 
   simplifies to

1. 1. 100

      101

   
   
   

   2. 90

      101

   
   
   

   3. 20

      101

   
   
   

   4. 101

      100

   
   
   

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1. View Hint View Answer Discuss in Forum

   Suppose that
   
   

   ∴	a2 − b2	=	(a + b)(a − b)
   	(a + b)		(a + b)

   
   = (a – b)
   

   =	111	−	91	=	20
   	101		101		101

   Correct Option: C

   Suppose that
   
   

   ∴	a2 − b2	=	(a + b)(a − b)
   	(a + b)		(a + b)

   
   = (a – b)
   

   =	111	−	91	=	20
   	101		101		101

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3. 
   is simplified to

1. 1. 1

      3

   
   
   

   2. 2

   
   
   

   3. 6

   
   
   

   4. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   
   

   =		2
   	2 +	11 × 2	× 0.39
   		39

   
   

   =		2
   	2 +	11 × 2	×		39
   		39			100

   
   

   =	2
   	2 +	11
   		50

   
   

   =	2
   	100 +11
   	50

   
   

   =	100
   	111

   Correct Option: D

   
   

   =		2
   	2 +	11 × 2	× 0.39
   		39

   
   

   =		2
   	2 +	11 × 2	×		39
   		39			100

   
   

   =	2
   	2 +	11
   		50

   
   

   =	2
   	100 +11
   	50

   
   

   =	100
   	111

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4. 

1. 1. 3

   
   
   

   2. 3

      2

   
   
   

   3. 2

      3

   
   
   

   4. 5

      3

   
   
   

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1. View Hint View Answer Discuss in Forum

   Expression = 1 +		1
   	1 +	1
   		2

   
   

   = 1 +	1
   	2 +1
   	2

   
   

   = 1 +	2	=	3 + 2	=	5
   	3		3		3

   Correct Option: D

   Expression = 1 +		1
   	1 +	1
   		2

   
   

   = 1 +	1
   	2 +1
   	2

   
   

   = 1 +	2	=	3 + 2	=	5
   	3		3		3

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5. 

1. 1. 38

      109

   
   
   

   2. 109

      38

   
   
   

   3. 1

   
   
   

   4. 116

      109

   
   
   

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1. View Hint View Answer Discuss in Forum

   Expression
   
   

   =	38
   	33
   	99 + 10
   	33

   
   

   =	38	×	33	=	38
   	33		109		109

   Correct Option: A

   Expression
   
   

   =	38
   	33
   	99 + 10
   	33

   
   

   =	38	×	33	=	38
   	33		109		109

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