196. The difference of 5.76 and 2.3 is

1. 1. 2.54

   
   
   

   2. 3.73

   
   
   

   3. 3.46

   
   
   

   4. 3.43

   
   
   

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1. View Hint View Answer Discuss in Forum

   5.76 − 2.3
   

   = 5 +	76	− 2 −	3	= 3 +	76	−	1
   	99		9		99		9

   
   

   = 3 +	76 − 33	= 3 +	43	= 3.43
   	99		99

   Correct Option: D

   5.76 − 2.3
   

   = 5 +	76	− 2 −	3	= 3 +	76	−	1
   	99		9		99		9

   
   

   = 3 +	76 − 33	= 3 +	43	= 3.43
   	99		99

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197. 0.142857 ÷ 0.285714 is equal to

1. 1. 10

   
   
   

   2. 2

   
   
   

   3. 1

      2

   
   
   

   4. 1

      3

   
   
   

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1. View Hint View Answer Discuss in Forum

   0.142857 ÷ 0.285714
   

   =	142857	÷	285714
   	999999		999999

   
   

   =	142857	=	1
   	285714		2

   
   

   Correct Option: C

   0.142857 ÷ 0.285714
   

   =	142857	÷	285714
   	999999		999999

   
   

   =	142857	=	1
   	285714		2

   
   

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198. Which one of the following numbers is not a square of any natural number ?

1. 1. 17956

   
   
   

   2. 18225

   
   
   

   3. 63592

   
   
   

   4. 53361

   
   
   

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1. View Hint View Answer Discuss in Forum

   √18225 = 135,
   √17956 = 134
   √63592 = 252.17
   In a perfect square number 2 never comes at the unit's place.

   Correct Option: C

   √18225 = 135,
   √17956 = 134
   √63592 = 252.17
   In a perfect square number 2 never comes at the unit's place.

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199. If a and b are two distinct natural numbers, which one of the following is true ?

1. 1. √a + b > √a + √ b

   
   
   

   2. √a + b = √a + √ b

   
   
   

   3. √a + b < √a + √ b

   
   
   

   4. ab = 1

   
   
   

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1. View Hint View Answer Discuss in Forum

   (√a + b)² = a + b
   (√a + √b)² = a + b + 2√ab
   Here, a + b < a + b + 2√ab
   Clearly, √a + b < √a + √b

   Correct Option: C

   (√a + b)² = a + b
   (√a + √b)² = a + b + 2√ab
   Here, a + b < a + b + 2√ab
   Clearly, √a + b < √a + √b

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200. Given that
     

     3.718 =	1	; then	1
     	0.2689		0. 0003718

     
     is equal to

1. 1. 2689

   
   
   

   2. 2.689

   
   
   

   3. 26890

   
   
   

   4. 0.2689

   
   
   

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1. View Hint View Answer Discuss in Forum

   3.718 =	1	(Given)
   	0.2689

   
   

   ∴	1	=	10000
   	0.0003718		3.718

   
   = 0.2689 ×10000 = 2689

   Correct Option: A

   3.718 =	1	(Given)
   	0.2689

   
   

   ∴	1	=	10000
   	0.0003718		3.718

   
   = 0.2689 ×10000 = 2689

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