16. 

1. 1. 40

      11

   
   
   

   2. 43

      11

   
   
   

   3. 46

      11

   
   
   

   4. 41

      11

   
   
   

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1. View Hint View Answer Discuss in Forum

   
   

   = 3 +		1
   	3 +	3
   		10

   
   

   = 3 +	3
   	30 + 3
   	10

   
   

   = 3 +	30	= 3 +	10	=	33 + 10	=	43
   	33		11		11		11

   Correct Option: B

   
   

   = 3 +		1
   	3 +	3
   		10

   
   

   = 3 +	3
   	30 + 3
   	10

   
   

   = 3 +	30	= 3 +	10	=	33 + 10	=	43
   	33		11		11		11

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17. When simplified, the expression

    = (100)1/2 × (0.001)1/3 − (0.0016)1/4 × 30 +		5		−1
    		4

    is equal to:

1. 1. 1.6

   
   
   

   2. 0.8

   
   
   

   3. 1.0

   
   
   

   4. 0

   
   
   

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1. View Hint View Answer Discuss in Forum

   = (100)1/2 × (0.001)1/3 − (0.0016)1/4 × 30 +		5		−1
   		4

   
   

   = 10 × 0.1 – 0.2 × 1 +	4
   	5

   
   = 1 – 0.2 + 0.8 = 1.6

   Correct Option: A

   = (100)1/2 × (0.001)1/3 − (0.0016)1/4 × 30 +		5		−1
   		4

   
   

   = 10 × 0.1 – 0.2 × 1 +	4
   	5

   
   = 1 – 0.2 + 0.8 = 1.6

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18. 
    is equal to

1. 1. 1

   
   
   

   2. 1

      2

   
   
   

   3. 2

   
   
   

   4. 1

      3

   
   
   

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1. View Hint View Answer Discuss in Forum

   First part =	30	−	1
   	7		2
   	7	+	8
   	2		7

   
   

   =	60 − 7
   	14
   	49 + 16
   	14

   
   

   =	53	×	14	=	53
   	14		65		65

   
   
   

   =	1
   	2 +	24
   		53

   
   

   =	1
   	106 + 24
   	53

   
   

   =	53
   	130

   
   ∴  Expression
   

   =	53	÷	53	=	53	×	130	= 2
   	65		130		65		53

   Correct Option: C

   First part =	30	−	1
   	7		2
   	7	+	8
   	2		7

   
   

   =	60 − 7
   	14
   	49 + 16
   	14

   
   

   =	53	×	14	=	53
   	14		65		65

   
   
   

   =	1
   	2 +	24
   		53

   
   

   =	1
   	106 + 24
   	53

   
   

   =	53
   	130

   
   ∴  Expression
   

   =	53	÷	53	=	53	×	130	= 2
   	65		130		65		53

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19. 
    part of a journey takes 10 minutes, then to complete (3/5)th of that journey, it will take

1. 1. 40 minutes

   
   
   

   2. 45 minutes

   
   
   

   3. 48 minutes

   
   
   

   4. 36 minutes

   
   
   

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1. View Hint View Answer Discuss in Forum

   
   

   = 40 −	5
   	40
   	31

   
   

   = 40 −	5 × 31
   	40

   
   

   = 4 −	31	=	32 − 31	=	1
   	8		8		8

   
   

   ∵  Time taken in completing	1	part = 10 minutes
   	8

   
   

   ∴  Time taken in completing	3	part
   	5

   
   

   = = 10 × 8 ×	3	= 48 minutes
   	5

   Correct Option: C

   
   

   = 40 −	5
   	40
   	31

   
   

   = 40 −	5 × 31
   	40

   
   

   = 4 −	31	=	32 − 31	=	1
   	8		8		8

   
   

   ∵  Time taken in completing	1	part = 10 minutes
   	8

   
   

   ∴  Time taken in completing	3	part
   	5

   
   

   = = 10 × 8 ×	3	= 48 minutes
   	5

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20. 
    is equal to

1. 1. 1

   
   
   

   2. 4

   
   
   

   3. 3

   
   
   

   4. 2

   
   
   

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1. View Hint View Answer Discuss in Forum

   4	1	− 2	1
   	7		4
   3	1	+ 1	1
   	2		7

   
   

   =	29	−	9
   	7		4
   	7	+	8
   	2		7

   
   

   =	116 − 63
   	28
   	49 + 16
   	14

   
   

   =	53	×	14	=	53
   	28		65		130

   
   Again,
   
   

   =	5
   	106 + 24
   	53

   
   

   =	53
   	130

   
   

   ∴  Expression =	√	53	÷	53	= 1
   		130		130

   Correct Option: A

   4	1	− 2	1
   	7		4
   3	1	+ 1	1
   	2		7

   
   

   =	29	−	9
   	7		4
   	7	+	8
   	2		7

   
   

   =	116 − 63
   	28
   	49 + 16
   	14

   
   

   =	53	×	14	=	53
   	28		65		130

   
   Again,
   
   

   =	5
   	106 + 24
   	53

   
   

   =	53
   	130

   
   

   ∴  Expression =	√	53	÷	53	= 1
   		130		130

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