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What is the sum of all prime numbers between 1 and 100 that are simultaneously one greater than a multiple of 5 and one less than a multiple of 6?
123
To be a multiple of 5 a number ends with 0 or 5. No primes can be even, so no multiple of 5 may end with 5. Without knowing which are primes the possible numbers left are: 11, 21, 31, 41, 51, 61, 71, 81, 91.
To be a multiple of 6 is must be even and the digit sum must be dividable by 3. Without knowing which are primes the possible numbers left from the above are: 11, 41 and 71. By a staggering coincidence all those are in fact primes, thus making the sum 123.
/C
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Lcm of two consecutive numbers is greater than 200 and is a multiple of 7?
To find the least common multiple (LCM) of two consecutive numbers that is greater than 200 and is a multiple of 7, we need to consider the properties of consecutive numbers and multiples of 7. Since the LCM must be greater than 200 and a multiple of 7, the two consecutive numbers must be 28 and 29. The LCM of 28 and 29 is 812, which is greater than 200 and a multiple of 7.
The difference between a factor and a multiple?
Factors go into numbers, numbers go into multiples.
What is the least common factor for two numbers if there are no common factors greater than 1?
The least common factor for two numbers is always one. The least common multiple for two numbers which have no common factors greater than one is their product.
What is the similarity between factor and multiple?
They both describe relationships between numbers.
What is the first multiple of 6 which is between 2 composite numbers?
120.
What Numbers between 55 and 101 that has a multiple 2810?
what numbers between 55 and 101 that has a multiple of 2,8,10
When is the least common multiple of a pair of numbers that number?
When one of the numbers is a multiple of the other, the greater is the LCM and the lesser is the GCF of that set.
Is every multiple of a number is always greater then the number itself?
Not with negative numbers. -10 is a multiple of -2.
What is the LCM of 2 numbers when one is a multiple of the other?
The greater number.
Is a multiple always greater than the number?
No, not when negative numbers are involved. For example, -2 is a multiple of both -1 and 1 and is not greater than either.
What is The least common multiple of 2 numbers if one number is a multiple of the other?
The LCM is the greater number.
The LCM of two consecutive numbers is greater then 200 and is a multiple of 7. What are the two numbers?
14 and 15
Is it true that when one number is multiple of another the greatest common factor of the numbers is greater of the numbers?
No, the lesser.
What are the square numbers that are greater than 80 and a multiple of 16?
There are infinitely many of them. The square of any multiple of four that is greater or equal to 12 will meet the requirement.
Lcm of two consecutive numbers is greater than 200 and is a multiple of 7?
To find the least common multiple (LCM) of two consecutive numbers that is greater than 200 and is a multiple of 7, we need to consider the properties of consecutive numbers and multiples of 7. Since the LCM must be greater than 200 and a multiple of 7, the two consecutive numbers must be 28 and 29. The LCM of 28 and 29 is 812, which is greater than 200 and a multiple of 7.
LCM of two numbers if one number is a multiple of the other?
the greater of the two.
What numbers between 55101 are a multiple 2816?
There can be no numbers between a single number: 55101.
