HCF and LCM

What is the number of divisors of $360$?

What is the least number which when divided by $15,17and18$ leaves remainder $3$ in each case?

HCF and LCM of two numbers are $7$ and $140$ respectively. If the numbers are between $20$ and $45$, the sum of the numbers is _____.

How many times do they toll together in $30$ minutes. If six bells commence tolling together and toll at intervals of $2, 4, 6, 8,10$ and $12$Seconds respectively ?

Find the L.C.M of $0.5, 2.1$and $2.8$.

The greatest $4$-digit number exactly divisible by $10, 15, 20$ is -

What is the HCF of $18$ and $48$?

Three different containers contain different quantities of a mixture of milk and water, whose measurements are $403 \mathrm{kg}, 434 \mathrm{kg}$ and $465 \mathrm{kg}$. What biggest measure be there to measure all the different quantities exactly?

Find H.C.F. Three number are in the ratio of $3 : 4 : 5$ and their L.C.M. is $2400$ ?

How many number lie between $1-1000$ which divisible by $6,7and15$.

The greatest number, which when divide $989$ and $1327$ leave remainders $5$ and $7$ respectively, is:

The maximum number of students among whom $1001$ pens and $910$ pencils can be distributed in such a way that each student gets same number of pens and same number of pencils, is:

Four bells ring at intervals of $4, 6, 8$ and $14$ seconds. They start ringing simultaneously at $12.00$ O'clock. At what time will they again ring simultaneously?

Four runners started running simultaneously from a point on a circular track. They took $200$ seconds, $300$ seconds, $360$ seconds and $450$ seconds to complete one round. After how much time do they meet at the starting point for the first time?

From a point on a circular track $5 \mathrm{km}$ long A, B and C started running in the same direction at the same time with speed of $2\frac{1}{2} \mathrm{km}$ per hour. $3 \mathrm{km}$ per hour and $2 \mathrm{km}$ per hour respectively. Then on the starting point all three will meet again after

What is the smallest number which leaves remainder $3$ when divided by any of the numbers $5$, $6$ or $8$ but leaves no remainder when it is divided by $9$?

A number which when divided by $10$ leaves a remainder of $9$. When divided by $9$ leaves a remainder of $8$, and when divided by $8$ leaves a remainder of $7$, is:

The least number which when divided by $12,15,20$ or $54$ leaves a remainder of $4$ in each case, is:

The least number which when divided by $4, 6, 8, 12$ and $16$ leaves a remainder of $2$ in each case is:

The product of two numbers is $2160$ and their HCF is $12$. Number of such possible pairs is