Number System
-  Which of the following fractions does not lie between5 and 8 ? 6 15 
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                        View Hint View Answer Discuss in Forum 5 = 0.83 6 8 = 0.53 15 6 = 0.86 7 
 Clearly, 0.53 < 0.83 < 0.86Correct Option: D5 = 0.83 6 8 = 0.53 15 6 = 0.86 7 
 Clearly, 0.53 < 0.83 < 0.86
-  The smallest fraction, which should be added to the sum of2 1 , 3 1 , 4 1 , and 5 1 2 3 4 5 
 to make the result a whole number, is
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                        View Hint View Answer Discuss in Forum 2 1 + 3 1 + 4 1 + 5 1 2 3 4 5 = (2 + 3 + 4 + 5) +  1 + 1 + 1 + 1  2 3 4 5 = 14 +  30 + 20 + 15 + 12  60 = 14 + 77 = 14 + 1 17 60 60 = 15 77 60 ∴ Required answer = 1 – 77 = 60 − 17 = 43 60 60 60 Correct Option: D2 1 + 3 1 + 4 1 + 5 1 2 3 4 5 = (2 + 3 + 4 + 5) +  1 + 1 + 1 + 1  2 3 4 5 = 14 +  30 + 20 + 15 + 12  60 = 14 + 77 = 14 + 1 17 60 60 = 15 77 60 ∴ Required answer = 1 – 77 = 60 − 17 = 43 60 60 60 
-  The vulgar fraction of 0.3939 is :
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                        View Hint View Answer Discuss in Forum 0.3939 = 0.39 = 39 = 13 99 33 Correct Option: D0.3939 = 0.39 = 39 = 13 99 33 
-  If 3/4 of a number is 7 more than 1/6 of the number, then 5/3 of the number is :
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                        View Hint View Answer Discuss in Forum Let the number be x. 
 According to the question,3x − x = 7 4 6 ⇒ 9x − 2x = 7 12 
 ⇒ 7x = 12 × 7⇒ x = 12 × 7 = 12 12 ∴ 5x = 5 × 12 = 20 3 3 Correct Option: BLet the number be x. 
 According to the question,3x − x = 7 4 6 ⇒ 9x − 2x = 7 12 
 ⇒ 7x = 12 × 7⇒ x = 12 × 7 = 12 12 ∴ 5x = 5 × 12 = 20 3 3 
-  If the sum of two numbers, one of which is 2/5 times the other, is 50, then the numbers are
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                        View Hint View Answer Discuss in Forum First number = x (let) ∴ Second number = 2x 5 ∴ x + 2x = 50 5 ⇒ 5x + 2x = 50 5 
 ⇒ 5x + 2x = 50 × 5
 ⇒ 7x = 250⇒ x = 250 7 ∴ Second number = 2 × 250 = 100 5 7 7 
 Correct Option: DFirst number = x (let) ∴ Second number = 2x 5 ∴ x + 2x = 50 5 ⇒ 5x + 2x = 50 5 
 ⇒ 5x + 2x = 50 × 5
 ⇒ 7x = 250⇒ x = 250 7 ∴ Second number = 2 × 250 = 100 5 7 7 
 
 
	