Types of number

Express $60$ as a product formed from its prime factors.

May/June 2015

Express $96$ as a product made from its prime factors.

May/June 2016

Express $36$ in prime factor form.

May/June 2017

List all integers that satisfy the inequality $-\frac{3}{2} \leq x < 2$.

May/June 2017

Express $168$ as a product of its prime factors.

May/June 2019

The list of numbers is $15, 125, \sqrt{8}, 11, \sqrt{25}, 14, 60$. Using the numbers shown above, write down

May/June 2021

Express $308$ as a product of its prime factors.

May/June 2021

Write $270$ in the form of a product of prime factors.

May/June 2021

State

May/June 2022

Write $325$ in the form of a product made from prime factors.

May/June 2023

Jack uses number cards to form a $2$-digit number. Fill in the missing card so that the result is a $2$-digit number that is not prime.

May/June 2024

Among the factors of $50$, two are square numbers. One is $1$. Determine the other square number that divides $50$.

May/June 2024

Write $228$ in prime factor form.

May/June 2025

A green light flashes at 12-minute intervals. A red light flashes at 45-minute intervals. Both lights flash at the same time at $9\,\text{am}$.

May/June 2025

State

May/June 2025

Write eighteen thousand and twelve in figures.

May/June 2025

One number expressed as a product of prime factors is $2^2 \times 5^2 \times 7$.

Oct/Nov 2015

State an irrational number that lies between $4$ and $5$.

Oct/Nov 2018

Here, $p = 2^3 \times 3 \times 5^2$ while $q = 2 \times 3^2 \times 5$.

Oct/Nov 2019

Here is the set of numbers: $\sqrt{35},\ \sqrt{36},\ \frac{36}{37},\ 37,\ \frac{37}{36},\ 3.7$

Oct/Nov 2019

Express $60$ in prime-factor form.

Oct/Nov 2021

Write $216$ in prime-factor form.

Oct/Nov 2021

Express $120$ as a product of prime factors.

Oct/Nov 2022

Write $420$ as a product of prime factors.

Oct/Nov 2022

Write $36$ in prime-factor form.

Oct/Nov 2023

Write $180$ as a product made from prime factors.

Oct/Nov 2023

The numbers in the list are: $\frac{1}{3}$, $\sqrt{4}$, $2^{0}$, $\sqrt{5}$, $\frac{10}{8}$, $2^{-1}$.

Oct/Nov 2024

For $120$ and $126$, the least common multiple (LCM) comes to $2520$.

Oct/Nov 2024

State the reciprocal of $\frac{7}{2}$.

Oct/Nov 2025

Choose from the list: 52, $\sqrt{169}$, 27, $\sqrt{8}$, $\frac{12}{23}$, 49

Oct/Nov 2025

Let $x=2^2\times3^{n+1}\times7$ and $y=2^n\times3^7\times7^4$. Here, $n$ is a positive integer larger than 2.

Oct/Nov 2025

$N=2\times3^x\times5^y$. The least common multiple (LCM) of N and 360 equals 16200.

Oct/Nov 2025