How do you find the LCM of first 20 natural numbers?

The least common multiple will be 8 * 9 * 5 * 7 = 72 * 5 * 7 = 360 * 7 = 2520.

What are the first 20 natural numbers?

The first 20 natural numbers are 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19 and 20.

What is the LCM of 1 to 10 natural numbers?

Answer: The LCM of the first 10 natural numbers is 2520.

How do you find the LCM of first n natural numbers?

Generate all prime number less then 10^6 and store in Array prime by using Sieve of Eratosthenes. Find the maximum number which is less than the given number and equal to power of the prime. Then multiply this number with lcm variable.

Does the sum of the first 20 natural numbers is 210?

Here there are 20 terms. Also, n here is the number of terms and that is equal to 20. So, now the correct option is A) 210. Note: It is important to keep in mind that zero is not the natural number.

What is the sum of the squares of the first 20 natural numbers 1 to 20?

2870
2. The sum of squares of first 20 natural numbers is 2870.

What is the LCM of the first n natural numbers?

Let n be the largest natural number such that p n ≤ N. Then the LCM of the first N natural numbers is given by p k ⌋. After just a quick thought I think it might look something like this: where p i are prime numbers smaller or equal than n.

What is the LCM of (10 12 12 15)?

Therefore, LCM of (10, 12, 15) = 60. In this method, we divide the given numbers by the least prime number which divides at least one of the given numbers. The numbers that are not divisible by the prime number are written as it is in the next row.

What is the difference between LCM and a common multiple?

A common multiple is a number which is a multiple of two or more numbers. LCM denotes the least common factor or multiple of any two or more given integers. For example, L.C.M of 16 and 20 will be 2 x 2 x 2 x 2 x 5 = 80, where 80 is the smallest common multiple for numbers 16 and 20.

How do you find the lowest common multiple of a number?

To get the Lowest Common Multiple of a group of numbers, you need to identify their prime factors: So these are, for 1..10: We need another 2 to accommodate 4, and a further 2 to accommodate 8. We need an extra 3 to accommodate 9. So LCM (1..10) = 2^3 * 3^2 * 5*7. We need another 2 for 4, 12 and 20. We need a third for 8 and a fourth for 16