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45 and 90
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∙ 8y ago
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What s the LCM of 5 10 and 45?
The LCM is 90
What is 10 's least common multiple?
You need at least two numbers to find an LCM.
What is 38's least common multiple?
You need at least two numbers to find an LCM. If that's 3 and 8, the LCM is 24.
If the sum of two numbers is 90 and their difference is 12 what is the smaller number?
Designate the smaller number as s. From the statement of the problem, s + s +12 = 90; or 2s = 90 -12 = 78; s = 39
What is the Least Common Multiple of 3s and s to the second power?
You need at least two numbers to find an LCM.
How many different positive three digit are having the product of their digits equal to zero?
This is only possible if one of the digits is equal to zero. There are 90 3-digit numbers with a zero in the 10's place, and 90 3-digit numbers with a zero in the 1's place - and 9 numbers that have both a zero in the 10's place and a zero in the 1's place; these would be counted double if you just add the first two. So, you get: 90 + 90 - 9 such numbers.
Are all 90's prime numbers?
No.
What is the LCM of 210 and 450?
Start by factoring both numbers into primes: 210 = 2*3*5*7 450= 2*3*3*5*5 What's the shortest list that includes all the factors of both numbers? One 2, two 3's, two 5's, one 7 That's the recipe for lcm in this problem. lcm = 2*3*3*5*5*7 = 3150
What numbers are prime numbers in the 90's?
There is only one: 97.
What is the LCM of 100 and 130?
Find the LCM by finding prime factorization of both numbers:100 = 2 * 2 * 5 * 5130 = 2 * 5 * 13Then, count each pair of prime numbers. The two factorizations have two pairs of prime numbers: one pair of 2's and one pair of 5's (pairs are bolded, above):Paired primes: 2, 5Next, count the remaining primes and multiply them with the paired primes.Paired primes: 2, 5Unpaired primes: 2, 5, 13The LCM of 100 and 130 is2 * 2 * 5 * 5 * 13 = 1300
Are all numbers in the 90's prime or composite?
The numbers in the 90s are all composite, apart from 97, which is prime.
What are 10's least common multiples?
Multiples of 10 include any number ending in zero. You need at least two numbers to find an LCM.
