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10th CBSE
IMPORTANT
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All terminating or non-terminating recurring decimal numbers are irrational numbers.

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Important Questions on Real Numbers

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10th CBSE
IMPORTANT
CBSE Syllabus Standard Mathematics for Class X>Chapter 1 - Real Numbers>Objective Questions>Q 2
All non-terminating and non-recurring decimal numbers are rational numbers.
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10th CBSE
IMPORTANT
CBSE Syllabus Standard Mathematics for Class X>Chapter 1 - Real Numbers>Objective Questions>Q 1
HCF×LCM for the numbers 50 and 20 is
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10th CBSE
IMPORTANT
CBSE Syllabus Standard Mathematics for Class X>Chapter 1 - Real Numbers>Objective Questions>Q 2
If HCF(72, 120)=24, then LCM(72, 120) is 
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10th CBSE
IMPORTANT
CBSE Syllabus Standard Mathematics for Class X>Chapter 1 - Real Numbers>Objective Questions>Q 3
Given that LCM(91, 26)=182, then HCF(91, 26) is 
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10th CBSE
IMPORTANT
CBSE Syllabus Standard Mathematics for Class X>Chapter 1 - Real Numbers>Objective Questions>Q 4
If the HCF and LCM of two natural numbers are 12 and 180, and one of the numbers is 36, then the other number is 
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10th CBSE
IMPORTANT
CBSE Syllabus Standard Mathematics for Class X>Chapter 1 - Real Numbers>Objective Questions>Q 5
If HCF(a, 8)=4 and LCM(a, 8)=24, then a is
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10th CBSE
IMPORTANT
CBSE Syllabus Standard Mathematics for Class X>Chapter 1 - Real Numbers>Objective Questions>Q 6
Given that HCF(2520, 6600)=120 and LCM(2520, 6600)=252k, then value of k is 
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10th CBSE
IMPORTANT
CBSE Syllabus Standard Mathematics for Class X>Chapter 1 - Real Numbers>Objective Questions>Q 7
If the HCF of 65 and 117 is expressed in the form 65m-117, then the value of m is