MCQ Subject: Number System

In the number 945, what is the place value of the digit ‘5’?

What is the general relationship between the Highest Common Factor (HCF) and the Least Common Multiple (LCM) of any two numbers?

If ‘n’ is a positive integer, which of the following is ALWAYS TRUE regarding consecutive integers?

If the sum of the digits of a number is 15, what can be inferred about the number’s divisibility?

If the sum of two integers is even, which of the following must be true about the integers?