Question : What is the HCF of 1.05 and 6.23?
Option 1: 0.89
Option 2: 0.21
Option 3: 0.07
Option 4: 0.35
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Correct Answer: 0.07
Solution : 1.05 = $\frac{105}{100}$ 6.23 = $\frac{623}{100}$ HCF of fractions = $\frac{\text{HCF of numerator}}{\text{LCM of denominator}}$ HCF of $\frac{105}{100}$ and $\frac{623}{100}$ = $\frac{7}{100}=0.07$ Hence, the correct answer is 0.07.
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Question : What is the value of 1.65 × 1.65 × 1.65 + 0.35 × 0.35 × 0.35 + 3.465?
Option 1: 8
Option 2: 7.5
Option 3: 4
Option 4: 5.5
Question : What is the HCF of two prime numbers X and Y?
Option 1: 1
Option 2: 2
Option 3: Y
Option 4: X
Question : Three numbers are in the ratio 2 : 3 : 5 and their LCM is 60. What is the HCF of the numbers?
Option 1: 2
Option 2: 4
Option 3: 10
Option 4: 6
Question : What is the HCF of 225 and 425?
Option 1: 5
Option 2: 17
Option 3: 25
Option 4: 9
Question : What is the HCF of 513 and 1017?
Option 1: 15
Option 2: 8
Option 3: 9
Option 4: 13
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