Unique Academic Board Solutions for Exercise 1: Practice Exercise

The HCF of $1.08, 0.36$ and $0.9$ is:

The product of two numbers is $2028$ and their HCF is $13$. The number of such pairs is:

The greatest number of four digit which is divisible by $15, 25, 40$and $75$ is:

The greatest number which on dividing $1657$ and $2037$ leaves remainders $6$ and $5$ respectively, is:

Find the largest number which divides $1630, 525$ and $1280$ leaving the remainder $6, 3$ and $4$ respectively: 

Find the largest number which divides $245$ and $1029$ leaving remainder $5$ in each case.

The product of two numbers is $7168$ and their HCF is $16$. The number of such possible pairs is:

The sum of two numbers is $36$ and their HCF is $4$. How many pairs of such numbers are possible?