‘Gaps’ concept, which actually stems from Grouping, is part of our ‘G.P.S’ method to tackle Pattern-type questions and will be explored further in our future post.
Number of gaps = Number of Things – 1
Let's take a look below at a commonly-asked exam question on 'Gaps' concept.
A similar example of 'Gaps' is 'Cuts'.
Question
If it takes 12 minutes to cut a log into 3 pieces, how long would it take to cut the log into
4 pieces?
Here we need to take note of the number of cuts, rather than the number of pieces we end up with.
Solution:
3 - 1 = 2 cuts
2 cuts → 12 minutes
1 cut → 12 ÷ 2 = 6 minutes
4 - 1 = 3 cuts
3 cuts → 6 x 3 = 18 minutes
Click here to recap the basic framework for the concept of Grouping.
UNBOXED Grouping- Gaps questions (with answers provided) are available below for FREE download, have a go at it!
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