RPH Editorial Board Solutions for Chapter: HCF and LCM, Exercise 1: MULTIPLE CHOICE QUESTIONS

Three measuring rods are $64$ cm, $80$ cm and $96$ cm in length. The least length of cloth that can be measured exact number of times using any of the above rods is

The product of two numbers is $1600$ and their HCF is $5$. The LCM of the number is

About the number of pairs which have $16$ as their HCF and $136$ as their LCM, we can definitely say that

The total number of prime factors of the product ${\left(8\right)}^{20}\times {\left(15\right)}^{24} \times {\left(7\right)}^{15}$ is

The LCM of two numbers is $85$and their product is $1020$. Their HCFwill be

HCF of $420, 315$ and $462$ is

Two numbers are in the ratio of $8:15$. If their HCF is $4$, the numbers are

Three bells ring respectively at an interval of $15$ seconds, $20$ seconds and $24$seconds. If they ring continuosly for $12$minutes then how many times during this period, will they ring together?