Many companies use a different number sequence for each type of account. For instance, asset accounts might use the numbers 100–199 and liability accounts might use the numbers 200–299.

If you’re new to Gantt charts, this guide will demystify them by telling you what they are, how they’re used and how to create one using project management software.

Each of the two-digit numbers multiplies together to make the single-digit number it is opposite in the pie chart - so with 23 being opposite to 6, you just need to know that 2x3 is 6.