R. D. Sharma Solutions for Chapter: Playing With Numbers, Exercise 13: CCE CHAPTER TEST

Define a perfect number. Write two perfect numbers.

Find the least number of five digits which is exactly divisible by each of $8, 12, 18, 40$ and $45$.

Reduce $\frac{289}{391}$ to the lowest terms.

Three tankers contain $403 \mathrm{litres}$, $434 \mathrm{litres}$ and $465 \mathrm{litres}$ of diesel respectively. Find the maximum capacity of a container that can measure the diesel of three containers exact number of times.

A number which has only two factors is called a _____ (Multiples, prime numbers, composite numbers)

The smallest composite number is _____.

The $\mathrm{HCF}$ of two consecutive odd numbers is _____.

The prime triplet is _____.