RRB Group D / RPF Constable Exam > RRB Group D / RPF Constable Videos > Railways Exam Preparation (in Hindi) > Railway Group D & ALP Exam || HCF and LCM PART - 5
Railway Group D & ALP Exam || HCF and LCM PART - 5 Video Lecture | Railways Exam Preparation (in Hindi) - RRB Group D / RPF Constable
FAQs on Railway Group D & ALP Exam -- HCF and LCM PART - 5 Video Lecture - Railways Exam Preparation (in Hindi) - RRB Group D / RPF Constable
| 1. Railway Group D & ALP Exam || HCF and LCM PART - 5 ? |  |
Ans. This is not a valid question as it does not provide any information or ask for any specific details related to the given article title and exam. Please provide a specific question related to the topic.
| 2. What is HCF and LCM? | |
Ans. In mathematics, HCF (Highest Common Factor) refers to the largest number that divides two or more given numbers without leaving any remainder. LCM (Least Common Multiple), on the other hand, is the smallest number that is divisible by two or more given numbers without leaving any remainder.
| 3. How to calculate HCF and LCM? | |
Ans. To calculate the HCF of two or more numbers, you can use methods such as prime factorization, division method, or Euclidean algorithm. To calculate the LCM, you can use methods such as prime factorization or the division method.
| 4. Can you provide an example of finding HCF and LCM? | |
Ans. Sure! Let's find the HCF and LCM of two numbers, 12 and 18.
To find the HCF:
- List the prime factors of both numbers: 12 = 2^2 * 3 and 18 = 2 * 3^2
- Take the common factors with the lowest exponent: HCF = 2 * 3 = 6
To find the LCM:
- List the prime factors of both numbers: 12 = 2^2 * 3 and 18 = 2 * 3^2
- Take the factors with the highest exponent: LCM = 2^2 * 3^2 = 36
Therefore, the HCF of 12 and 18 is 6, and the LCM is 36.
| 5. How are HCF and LCM useful in real-life situations? | |
Ans. HCF and LCM are used in many real-life situations, such as:
- Finding the least number of objects required to evenly distribute them into groups or sets.
- Determining the smallest common denominator when adding or subtracting fractions.
- Optimizing the use of resources or materials by finding the smallest common multiple.
- Solving problems related to time, distance, and speed by finding the LCM of different time intervals.
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Dec 22, 2024 Last updated |
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