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What are the numbers less than 100 that have 2 and 5 in their factor strings?
Any multiple of 10.
What is a number less than 100 and has factor pairs?
All of the composite numbers less than 100 have factor pairs.
What prime numbers are one less than a multiple of 4?
3,7,11,19,23,31,43,47,51,59,67,71,79...
What is a prime number factor of 42 less than 10 factor of 70?
2 and 7 are prime numbers less than 10 that are factors of 42 and 70.
What numbers less than 1000 have 3 as their only prime factor?
3,9,27,81,243,729
What are the numbers less than 100 that have 2 and 5 in their factor strings?
Any multiple of 10.
Find two pairs of numbers whose least common multiple is less than the product of the numbers?
4 and 6 6 and 8 Any time the two numbers have a common factor, their LCM will be less than the product because the common factor contributes to the LCM fewer times than it contributes to the product.
What two numbers have a greatest common factor of 6 and a least common multiple of 3?
None. You can't have an LCM less than a GCF.
What is a number less than 100 and has factor pairs?
All of the composite numbers less than 100 have factor pairs.
Which number is a factor of but not a multiple?
Any factor of the number less than the number itself.
The greatest common factor of two numbers is 12 the least common multiple of the two is 144 the sum of the two is less than 144 what is the pair of numbers?
48 and 36
What are numbers less than 100 that also have 19 as a factor?
Numbers less than 100 having 19 as a factor are 19, 38, 57, 76, and 95.
Can the LCM of 9 and 17 be less than 17 Explain.?
No. A common multiple is a multiple of both numbers. There is no multiple of 17 that is less than 17.
What prime numbers are one less than a multiple of 4?
3,7,11,19,23,31,43,47,51,59,67,71,79...
What is a prime number that is greater than 41 and less than 47?
43 is the prime you seek. This question is really easy if you know that even numbers larger than 2 are not prime, and that any number ending in 5 is a multiple. The integers greater than 41 and less than 47 are 42,43,44,45, and 46. 42,44,46 are even and 45 is a multiple of 5. Thus 43 is the only candidate. If it factors, is has a prime factor less than 7 since 7 X 7 = 49 and 49 > 43. 2 is not a factor since 43 is odd. 3 is not a factor is the sum of its digits is 7 which is not a multiple of 3. 5 is not a factor since it does not end in 5 .
What is a prime number factor of 42 less than 10 factor of 70?
2 and 7 are prime numbers less than 10 that are factors of 42 and 70.
What numbers less than 1000 have 3 as their only prime factor?
3,9,27,81,243,729
