Arihant Expert Team Solutions for Exercise 1: MULTIPLE CHOICE QUESTIONS AND ANSWERS

The L.C.M and H.C.F of two numbers are $1260$ and $63$, respectively, if one of the two numbers is $315$, the other number is:

Find the least number which is a perfect square and is also divisible by $10, 12, 15$ and $18$.

The product of two numbers is $396\times 576$ and their L.C.M. is $6336$. The greatest number which will divide each number is:

Find the least number which when divided by $35$ leaves remainder $25$, when divided by $25$ leaves remainder $15$ and when divided by $15$ leaves remainder $5$.

Three sprinters start running from a point around a circular track. They complete a round after every $24$ minutes, $30$ minutes and $45$ minutes respectively. After what time all the three will meet at the starting point again?

The greatest fraction that will divide each of the fraction $2.4, 3.6$ and $6.0$ completely, is:

The least fraction which is divisible by each of the fraction $\frac{3}{16}, \frac{5}{12}$ and $\frac{7}{9}$.

The least multiple of $11$ which when divided by $2, 3, 4, 5$ and $6$ leaves a remainder $1$ in each case, is: