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?

The greatest number that can divide $140, 176$ and $264$ leaving remainder of $4, 6$ and $9$ respectively.

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 _____.

The sum of two numbers is $216$ and their HCF is$27$. How many pairs of such number are there?

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 $6,7and15$.

Find the number of factors of $240$.

Find the smallest number, which when divided by $8, 12, 20$ or $25$ leaves a remainder $5$ in each case?

Amita, Sneha, and Raghav start preparing cards for all persons of an old age home. In order to complete one card, they take $10$, $16$ and $20$ minutes respectively. If all of them started together, after what time will they start preparing a new card together?

Three rings complete $60,36$ and $24$ revolutions in a minute. They start from a certain point in their circumference downwards. By what time they come together again in the same position?

Find the least number which when divided by $12,15 , 20$ and $24$ leaves the same remainder $2$ in each case.

Find the least number which when decreased by $4$is exactly divisible by $9,12,15$ and $18:$

Find the least number which increased by $3$ is exactly divisible by $10,12,14$ and $16:$

Find the greatest number which will divide $148,246$ and $623$ leaving remainders $4,6$ and $11$ , respectively: