Editorial Board Solutions for Chapter: Arithmetic Maths, Exercise 1: LCM & HCF

LCM of $\frac{1}{3}, \frac{5}{6}, \frac{5}{4}, \frac{10}{7}$ is:

The greatest number of four digits that has $144$ as their HCF is:

The least number of five digits that have $144$ as their HCF, is:

The smallest number when increased by $1$ is exactly divisible by $12, 18, 24, 32$ and $40$is:

A heap of coconut is divided into group of $2, 3$ and $5$ and each time one coconut is left over. The least number of coconut in the heap is:

The smallest number, which when divided by $20, 25, 35$ and $40$ leaves a remainder of $14, 19, 29$ and $34$ respectively, is:

Find the least number of five digits which is exactly divisible by $12, 15$ and $18$.

HCF and LCM of two numbers are $12$ and $396$ respectively. If one of the numbers is $36$, then the other number is: