46. ³√√15612 + √154 + √225 is equal to

1. 1. 15

   
   
   

   2. 25

   
   
   

   3. 75

   
   
   

   4. 125

   
   
   

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1. View Hint View Answer Discuss in Forum

   Expression
   = ³√√15612 + √154 + √225
   = ³√√15612 + √154 + 15
   = ³√15612 + 13
   = ³√15625 = 25

   Correct Option: B

   Expression
   = ³√√15612 + √154 + √225
   = ³√√15612 + √154 + 15
   = ³√15612 + 13
   = ³√15625 = 25

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47. ³√√0.000064 is equal to

1. 1. 0.0002

   
   
   

   2. 0.002

   
   
   

   3. 0.02

   
   
   

   4. 0.2

   
   
   

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1. View Hint View Answer Discuss in Forum

   ³√√0.000064 = ³√0.008
   ³√0.2 × 0.2 × 0.2
   = 0.2

   Correct Option: D

   ³√√0.000064 = ³√0.008
   ³√0.2 × 0.2 × 0.2
   = 0.2

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48. 3√	19	is equal to
    	513

1. 1. 1

      9

   
   
   

   2. 1

      3

   
   
   

   3. 1

      √27

   
   
   

   4. 1

      √3

   
   
   

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1. View Hint View Answer Discuss in Forum

   3√	19	=	3√	1
   	513			27

   
   

   =	1
   	3

   Correct Option: B

   3√	19	=	3√	1
   	513			27

   
   

   =	1
   	3

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49. The value of	3√	7	is equal to
    		875

1. 1. 1

      3

   
   
   

   2. 1

      15

   
   
   

   3. 1

      4

   
   
   

   4. 1

      5

   
   
   

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1. View Hint View Answer Discuss in Forum

   3√	7	=		7		1/3
   	875			875

   
   

   =		1		1/3	=	1
   		125				5

   Correct Option: D

   3√	7	=		7		1/3
   	875			875

   
   

   =		1		1/3	=	1
   		125				5

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50. (5.5)³ – (4.5)³ is equal to :

1. 1. 1

   
   
   

   2. 75

   
   
   

   3. 74.25

   
   
   

   4. 75.25

   
   
   

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1. View Hint View Answer Discuss in Forum

   (5.5)³ – (4.5)³
   = (5.5 – 4.5)³ + 3 × 5.5 × 4.5 (5.5 – 4.5)
   = (1)³ + 74.25 (1)
   = 1 + 74.25 = 75.25

   Correct Option: D

   (5.5)³ – (4.5)³
   = (5.5 – 4.5)³ + 3 × 5.5 × 4.5 (5.5 – 4.5)
   = (1)³ + 74.25 (1)
   = 1 + 74.25 = 75.25

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