The LCM is: 16,425
Least Common Multiple (LCM) for 365 56 is 20,440
The least common multiple (lcm) of two or more numbers is the product of all prime factors of the numbers to their highest powers.The prime factors of 686 are 2 and 73The prime factors of 365 are 5 and 73.The least common multiple of 686 and 365 is 250390 (2 x 5 x 73 x 73).
The LCM is: 18,980
The common multiple refers to a multiple that is COMMON to two or more numbers. You have only one number in the question! The multiple of a number x, is the set of numbers of the form n*x where n is any integer.
365 is a composite number because it has factors other than 1 and itself. It is not a prime number.The 4 factors of 365 are 1, 5, 73, and 365.The factor pairs of 365 are 1 x 365 and 5 x 73.The proper factors of 365 are 1, 5, and 73 or,if the definition you are using excludes 1, they are 5 and 73.The prime factors of 365 are 5 and 73.The 2 distinct prime factors (listing each prime factor only once) of 365 are 5 and 73.The prime factorization of 365 is 5 x 73.NOTE: There cannot be common factors, a greatest common factor, or a least common multiple because "common" refers to factors or multiples that two or more numbers have in common. 73 and 5
At least two or more numbers must be given to find their greatest common factor
LCM(365, 30660) = 2176860. But this is a wrong answer. It is a common multiple, but not the least (smallest) common multiple. Here is how you find that out. First, factor 365 and 30660. 365 = 5 * 73 Five and seventy-three are prime (each has no divisors other than 1 and itself) 30660 = 10 * 3066 = 2 * 5 * 3066 = 2 * 5 * 3 * 1022 = 2 * 5 * 3 * 2 *511 = 2 * 5 * 3 * 2 * 7 * 73. You may want to put these primes in order. 30660 = 2 * 2 * 3 * 5* 7 * 73. The least common multiple will have any prime factor that is a factor as many times as it is a factor in either number, so the LCM is 2*2*3*5*7*73 = 30660. Another way to think about this is that there are 365 days in a year, so if we didn't have leap years, then 30660 days would be an even number of years. But we do have leap years. So it isn't.
The common factors of 160 and 365 are: 1 and 5
The probability of at least 2 people in a group of npeople sharing a common birthday can be expressed more easily (mathematically) as 1 minus the probability that nobody in the group shares a birthday. Consider two people. The probability that they don't have a common birthday is 365/365 x 364/365. So the probability that they do share a birthday is 1-(365/365 x 364/365) = 1-365x364/3652 Now consider 3 people. The probability that at least 2 share a common birthday is 1-365x364x363/3653 And so on so that the probability that at least 2 people in a group of n people having the same birthday = 1-(365x363x363x...x365-n+1)/365n = 1-365!/[ (365-n)! x 365n ]In the case of 12 people this equates to 0.16702 (or 16.7%).
The greatest common factor of 180 , 365 = 5