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10th CBSE
IMPORTANT
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The product of two irrational numbers is an irrational number.

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Important Questions on Real Numbers

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10th CBSE
IMPORTANT
The sum of two irrational numbers is always an irrational number.
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10th CBSE
IMPORTANT
For what value of n, 2n5n ends in 5.
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10th CBSE
IMPORTANT
If a and b are relatively prime numbers, then what is their HCF?
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10th CBSE
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If a and b are relatively prime numbers, then what is their LCM?
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10th CBSE
IMPORTANT
Two numbers have 12 as their HCF and 350 as their LCM.
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10th CBSE
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The exponent of 2 in the prime factorisation of 144, is
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10th CBSE
IMPORTANT
The LCM of two numbers is 1200. Which of the following cannot be their HCF ?
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10th CBSE
IMPORTANT
If n=23×34×54×7, then the number of consecutive zeros in n (where n is a natural number) is