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Find the LCM and HCF of the following integers by applying the prime factorisation method. (i) 12, 15 and 21 (ii) 17, 23 and 29 (iii) 8, 9 and 25
Posted on: Jan 12, 2025 by: Mohit Bhardwaj Last updated: Feb 27, 2025 | Tags: Class X Maths Real Numbers Class X Maths Class X
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Given that HCF (306, 657) = 9, find LCM (306, 657).
Posted on: Jan 12, 2025 by: Mohit Bhardwaj Last updated: Mar 14, 2025 | Tags: Class X Maths Real Numbers Class X Class X Maths
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Find the LCM and HCF of the following pairs of integers and verify that LCM × HCF = product of the two numbers. (i) 26 and 91 (ii) 510 and 92 (iii) 336 and 54
Posted on: Jan 15, 2025 by: Mohit Bhardwaj Last updated: Feb 27, 2025 | Tags: Class X Maths Class X Maths Real Numbers Class X
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Express each number as a product of its prime factors: (i) 140 (ii) 156 (iii) 3825 (iv) 5005 (v) 7429
Posted on: Jan 15, 2025 by: Mohit Bhardwaj Last updated: Feb 26, 2025 | Tags: Class X Maths Real Numbers Class X Maths Class X
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Check whether $6^n$ can end with the digit $0$ for any natural number $n$.
Posted on: Jan 24, 2025 by: Mohit Bhardwaj Last updated: Feb 27, 2025 | Tags: Class X Maths Class X Maths Real Numbers Class X
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Explain why $7 \times 11 \times 13 + 13$ and $7 \times 6 \times 5 \times 4 \times 3 \times 2 \times 1 + 5$ are composite numbers
Posted on: Jan 24, 2025 by: Mohit Bhardwaj Last updated: Feb 27, 2025 | Tags: Class X Maths Class X Maths Real Numbers Class X
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There is a circular path around a sports field. Sonia takes $18$ minutes to drive one round of the field, while Ravi takes $12$ minutes for the same.
Posted on: Jan 24, 2025 by: Mohit Bhardwaj Last updated: Mar 01, 2025 | Tags: Class X Class X Maths Class X Maths Real Numbers
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Prove that $\sqrt{5}$ is irrational.
Posted on: Jan 27, 2025 by: Mohit Bhardwaj Last updated: Feb 28, 2025 | Tags: Class X Class X Maths Class X Maths Real Numbers
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Prove that $3 + 2 \sqrt{5}$ is irrational.
Posted on: Jan 27, 2025 by: Mohit Bhardwaj Last updated: Feb 27, 2025 | Tags: Class X Maths Class X Maths Real Numbers Class X
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Prove that the following are irrationals : $1. \frac{1}{\sqrt{2}}$ $2. 7\sqrt{5}$ $3. 6 + \sqrt{2}$
Posted on: Jan 27, 2025 by: Mohit Bhardwaj Last updated: Feb 27, 2025 | Tags: Class X Class X Maths Class X Maths Real Numbers