Lowest Common Multiple

For each pair $\left(a, b\right): (3, 4), \left(11, 12\right) \& \left(15, 20\right)$, find their lowest common multiple, $LCM (a, b)$.

Determine L.C.M of $90, 60$ and $20$.

Determine L.C.M of $75$ and $100$.

Determine L.C.M of $35$ and $28$.

Determine L.C.M of $22$ and $66$.

Find the L.C.M of $15, 20$ and $18$.

Three bells, after ringing together once, ring after $15, 20$ and $25$ seconds respectively. When will the bells ring together again?(Write the final answer in seconds)

Find the smallest number divisible by $36$ and $54$.

Find the L.C.M of the numbers $30$ and $35$ with the help of prime factors.

Find the L.C.M of the numbers $70$ and $56$ with the help of prime factors.

Find the L.C.M of the numbers $45$ and $75$ with the help of prime factors.

Find the L.C.M of the numbers $12$ and $18$ with the help of prime factors.

With the help of prime factors, find the L.C.M of $15$ and $20$.

The H.C.F of two numbers is $5$ and their LCM is $60$. If one of the numbers is $15$, what is the other number?

What is the LCM of $4, 8$ and $12$?

Write down the full form of L.C.M.

Determine the relationship of the numbers $12$ and $18$ with their H.C.F and L.C.M.

Determine the relationship of the numbers $39$ and $65$ with their H.C.F and L.C.M.

Determine the relationship of the numbers $10$ and $15$ with their H.C.F and L.C.M.

Determine the relationship of the numbers $14$ and $21$ with their H.C.F and L.C.M.