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Showing posts with the label Number theory

The Mysterious Case of the Missing Numbers: A Number Sequence Challenge

  In the sequence below, two numbers are missing. Can you figure out what they are? 2 , 6 , _ , 18 , 22 , 26 , _ , 38 2 , 6 , _ , 18 , 22 , 26 , _ , 38 Take your time to think about the pattern in this sequence and when you're ready, let me know your answer! If you need a hint, feel free to ask.

The Mysterious Numbers

Find three consecutive odd numbers such that the sum of the smallest and the largest is 56. What are these numbers?

How many special numbers are there?

A number is called 'special' if it is a three-digit number and its digits are in arithmetic sequence. How many 'special' numbers are there where the middle digit is 5?

How many factors?

How many factors does 120 have? Can you find a quicker way? What is the sum of the factors of 120? Also, can you find a quicker way again? Please put your easier ways in the comments.😀