Number properties
Fractions, decimals, logarithms, factors, HCF / LCM, primes.
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Take a full mock →Q1 · Number properties · EASY
A number N is divisible by both 12 and 18. Which is the largest of the following numbers that N must also be divisible by?
Q2 · Number properties · EASY
The digits of a three-digit number add up to 15. What is the remainder when the number is divided by 9?
Q3 · Number properties · MEDIUM
What is the value of log_2(8) + log_4(16) - log_8(64)?
Q4 · Number properties · MEDIUM
The HCF of two numbers is 12 and their LCM is 216. If one number is 24, what is the other?
Q5 · Number properties · HARD
If p is a prime number greater than 5, what is the remainder when p^2 is divided by 24?