HCF AND LCM

Find the $\mathrm{HCF}$ of $14, 21$ and $252$.

Find the $\mathrm{HCF}$ of $42, 126$ and $252$.

Find the H.C.F. and L.C.M of $30,72,432$ by prime factorisation.

If the $\mathrm{H}.\mathrm{C}.\mathrm{F}.$ of $210$ and $55$ is expressible in the form of $210\times 5+55a$, then find the value of $a$.

Two natural numbers whose sum is $85$ and the least common multiple is $102$ are

L. C. M of $2.5, 0.5$ and $0.175$ is

The HCF of two numbers is $27$ and their LCM is $162$. If one of the number is $54$. What is the other number?

The H.C.F of $45$ and $105$ is $15$. Write their L.C.M.

Find the H.C.F of $960$ and $432$.

The traffic lights at three different roads crossing change after $48, 72$and $108$ seconds, respectively. If the time the traffic light changes simultaneously is $k$ minutes and $12$ seconds after $7.00 \mathrm{am}$, then find the value of $k$.

A circular field has a circumference of $360 \mathrm{km}$. Two cyclists Sumeet and John start together and can cycle at speeds of $12 \mathrm{km}/\mathrm{h}$ and $15 \mathrm{km}/\mathrm{h}$ respectively, round the circular field. They will meet again at the starting point after

LCM and HCF of 343 and 7 is:-

There is a circular path around a sports field. Sonia takes $18$ minutes to drive one round of the field, while Ravi takes $12$ minutes for the same. Suppose they both start at the same point and at the same time, and go in the same direction. What is the least amount of time after which they meet each other again at the starting point?

The LCM of two numbers 'a' and 'b' is 'L'. What is their HCF?

If HCF of 60 and 168 is 12, what is the LCM

LCM of three numbers 28, 44, 132 is -

The product of two number is 360 and their HCF is 6 find their LCM.

If p and q are two positive integers, then HCF(p,q) × LCM (p,q) =

If HCF of 60 and 168 is 12, what is the LCM.

The L.C.M. of 2 numbers of three digits each is 1740 and the H.C.F. is 209. The two numbers are