Number System
- Which of the following is correct ?
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On making denominators equal,
3 = 3 × 3 = 9 5 5 × 3 15 2 = 2 × 5 = 10 3 3 × 5 15 5 = 11 12 15 Correct Option: B
On making denominators equal,
3 = 3 × 3 = 9 5 5 × 3 15 2 = 2 × 5 = 10 3 3 × 5 15 5 = 11 12 15 ∴ 9 < 10 < 11 15 15 15 ⇒ 3 < 2 < 11 5 3 15
- Which of the following fraction is the smallest ?
9 , 17 , 28 , 33 13 26 29 52
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Multiply with 4 in Numerator and Denominator. We will get
9 = 9 × 4 = 36 13 13 × 4 52
Correct Option: A
Multiply with 4 in Numerator and Denominator. We will get
9 = 9 × 4 = 36 13 13 × 4 52 17 = 17 × 2 = 34 26 26 × 2 52 33 = 33 52 52 Among these 33 is the smallest 52 Again, 28 = 56 > 33 29 58 52
- Which of the following is the smallest fraction ?
8 , 7 , 11 , 14 25 23 23 53
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8 = 0.32, 7 = 0.30 25 23 11 = 0.47, 14 = 0.26 23 53
Correct Option: D
8 = 0.32, 7 = 0.30 25 23 11 = 0.47, 14 = 0.26 23 53 ∴ 14 is the smallest fraction. 53
- Which of the following fraction is the smallest?
8 , 14 , 11 , 14 15 33 23 53
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8 , 14 , 7 , 11 15 33 13 13 8 = 0.533 15 14 = 0.42 33 7 = 0.538 13 11 = 0.846 13
Correct Option: D
8 , 14 , 7 , 11 15 33 13 13 8 = 0.533 15 14 = 0.42 33 7 = 0.538 13 11 = 0.846 13 ∴ 11 > 7 > 8 > 14 13 13 15 33
- The least number to be added to 13851 to get a number which is divisible by 87 is :
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∴ Required number = 87 – 18 = 69Correct Option: D
∴ Required number = 87 – 18 = 69
