First A, then B, then C.

It’s so comforting when events follow a logical progression, and this logic is a wonderfully mathematical concept. Any great math tutoring service will address logical thinking, and our Mathnasium math learning centers help students with their logic skills both inside and outside the classroom.

This week’s word problem challenge gives students the opportunity not only to sharpen their logic skills, but also to practice other elementary math skills such as addition, subtraction and multiplication. Are you up for the challenge? We know you can do it!

Read the question, take your time working out your solution, and when you're ready look below to check your solution against ours.

**Question:** Machine A doubles a number. Machine B adds 2 to a number. Machine C subtracts 3 from a number. What will happen to the number 10 if we put it through all of the machines in alphabetical order?

**Solution:** If we put the number 10 into Machine A, it turns into 10 × 2 = 20. If 20 goes into Machine B, it turns into 20 + 2 = 22. If 22 goes through Machine C, it turns into 22 – 3 = 19. So, if we put the number 10 through all three machines in alphabetical order, we get 19.

Live long and prosper.