Number Systems
What is the least common multiple of 18 and 24?
Find the least number which should be added to 2497 so that the sum is exactly divisible by 5, 6, 4 and 3 ?
Prime factors $$5, 6, 4$$ and $$3:$$
$$3$$ and $$5$$ are prime numbers
$$ 6 = 2 \times 3 $$
$$ 4 = 2 \times 2 $$
LCM of $$5,6, 4$$ and $$3=60 $$
on dividing $$2497$$ by $$60,$$ the remainder is $$37.$$
Subtracting $$37$$ from $$60,$$ we have $$60 -37 = 23$$
so $$23$$ is the required number.
What is the least common multiple of 18 and 24?
Express each of the following numbers as a product of its prime factors: $$7560$$.
Express each of the following numbers as a product of its prime factors: $$140$$
Find the LCM and HCF of the following integers by applying the prime factorization method: $$6$$ and $$20$$.
Find the LCM and HCF of the following integers by applying the prime factorization method: $$87$$ and $$145$$.
Find the LCM and HCF of the following pair of integers and verify that LCM * HCF = product of two numbers: $$902$$ and $$1517$$.
Find LCM and HCF of the following integers by using prime factorization method: $$8,9$$ and $$25$$.
Find LCM and HCF of the following integers by using the prime factorization method. $$12,15$$ and $$21$$
In a morning walk, three persons step off together and their steps measure 40 cm, 42 cm and 45 cm respeclively. What is the minimum distance each should walk so that each can cover the same distance in complete steps. ?
The $$LCM$$ of two numbers is greater than or equal to the larger of the numbers.